chore: migrate to a monorepo setup

.github/actions/gradle/action.yml

@@ -12,9 +12,18 @@ runs:
   steps:
     - name: Configure Gradle wrapper
       run: |
-        node --eval "require('./android/gradle-wrapper.js').configureGradleWrapper('${{ inputs.project-root }}/android')"
+        node --eval "require('./packages/app/android/gradle-wrapper.js').configureGradleWrapper('${{ inputs.project-root }}/android')"
       shell: bash
     - name: Build
+      if: ${{ runner.os != 'Windows' }}
+      run: ./gradlew ${{ inputs.arguments }}
+      shell: bash
+      working-directory: ${{ inputs.project-root }}/android
+    - name: Build (Windows)
+      if: ${{ runner.os == 'Windows' }}
+      env:
+        # https://github.com/ninja-build/ninja/issues/1900
+        CMAKE_MAKE_PROGRAM: "C:\\ProgramData\\Chocolatey\\bin\\ninja.exe"
       run: ./gradlew ${{ inputs.arguments }}
       shell: bash
       working-directory: ${{ inputs.project-root }}/android

.github/actions/init-test-app/action.yml

@@ -9,7 +9,7 @@ runs:
   steps:
     - name: Install
       run: |
-        scripts/build/install-test-template.sh ${{ inputs.platform }}
+        scripts/install-test-template.sh ${{ inputs.platform }}
       shell: bash
     - name: Initialize a new app
       run: |

.github/actions/setup-react-native/action.yml

@@ -14,3 +14,4 @@ runs:
         rm example/visionos/Podfile.lock
         npm run set-react-version -- ${{ inputs.version }}
       shell: bash
+      working-directory: packages/app

.github/actions/setup-toolchain/action.yml

@@ -21,6 +21,11 @@ inputs:
 runs:
   using: composite
   steps:
+    - name: Enable long paths (Windows)
+      if: ${{ runner.os == 'Windows' }}
+      run: |
+        New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -Force
+      shell: powershell
     - name: Set up Ccache
       id: setup-ccache
       if: ${{ inputs.platform == 'ios' || inputs.platform == 'macos' || inputs.platform == 'visionos' }}

.github/labeler.yml

@@ -5,17 +5,17 @@
           - .github/actions/init-test-app/*
           - .github/actions/setup-toolchain/*
           - .github/workflows/build.yml
-          - android/**/*
-          - common/**/*
-          - example/android/**/*
-          - scripts/*.js
-          - scripts/configure.mjs
-          - scripts/embed-manifest/kotlin.mjs
-          - scripts/embed-manifest/main.mjs
-          - scripts/embed-manifest/validate.mjs
-          - scripts/init.mjs
-          - scripts/template.mjs
-          - test-app.gradle
+          - packages/app/android/**/*
+          - packages/app/common/**/*
+          - packages/app/example/android/**/*
+          - packages/app/scripts/*.js
+          - packages/app/scripts/configure.mjs
+          - packages/app/scripts/embed-manifest/kotlin.mjs
+          - packages/app/scripts/embed-manifest/main.mjs
+          - packages/app/scripts/embed-manifest/validate.mjs
+          - packages/app/scripts/init.mjs
+          - packages/app/scripts/template.mjs
+          - packages/app/test-app.gradle
 "platform: iOS":
   - changed-files:
       - any-glob-to-any-file:
@@ -24,19 +24,19 @@
           - .github/actions/setup-toolchain/*
           - .github/workflows/build.yml
           - Gemfile*
-          - ReactTestApp-DevSupport.podspec
-          - common/**/*
-          - example/ios/**/*
-          - ios/**/*
-          - scripts/*.js
-          - scripts/configure.mjs
-          - scripts/embed-manifest/main.mjs
-          - scripts/embed-manifest/swift.mjs
-          - scripts/embed-manifest/validate.mjs
-          - scripts/init.mjs
-          - scripts/template.mjs
-          - scripts/build/xcodebuild.sh
-          - test_app.rb
+          - packages/app/ReactTestApp-DevSupport.podspec
+          - packages/app/common/**/*
+          - packages/app/example/ios/**/*
+          - packages/app/ios/**/*
+          - packages/app/scripts/*.js
+          - packages/app/scripts/configure.mjs
+          - packages/app/scripts/embed-manifest/main.mjs
+          - packages/app/scripts/embed-manifest/swift.mjs
+          - packages/app/scripts/embed-manifest/validate.mjs
+          - packages/app/scripts/init.mjs
+          - packages/app/scripts/template.mjs
+          - packages/app/scripts/build/xcodebuild.sh
+          - packages/app/test_app.rb
 "platform: macOS":
   - changed-files:
       - any-glob-to-any-file:
@@ -45,25 +45,25 @@
           - .github/actions/setup-toolchain/*
           - .github/workflows/build.yml
           - Gemfile*
-          - ReactTestApp-DevSupport.podspec
-          - common/**/*
-          - example/macos/**/*
-          - ios/*.rb
-          - ios/ReactTestApp/Manifest.swift
-          - ios/ReactTestApp/React+Compatibility.{h,m}
-          - ios/ReactTestApp/ReactInstance.swift
-          - ios/ReactTestApp/ReactTestApp-Bridging-Header.h
-          - ios/ReactTestApp/Session.swift
-          - ios/ReactTestApp/UIViewController+ReactTestApp.{h,m}
-          - macos/**/*
-          - scripts/*.js
-          - scripts/configure.mjs
-          - scripts/embed-manifest/main.mjs
-          - scripts/embed-manifest/swift.mjs
-          - scripts/embed-manifest/validate.mjs
-          - scripts/init.mjs
-          - scripts/template.mjs
-          - scripts/build/xcodebuild.sh
+          - packages/app/ReactTestApp-DevSupport.podspec
+          - packages/app/common/**/*
+          - packages/app/example/macos/**/*
+          - packages/app/ios/*.rb
+          - packages/app/ios/ReactTestApp/Manifest.swift
+          - packages/app/ios/ReactTestApp/React+Compatibility.{h,m}
+          - packages/app/ios/ReactTestApp/ReactInstance.swift
+          - packages/app/ios/ReactTestApp/ReactTestApp-Bridging-Header.h
+          - packages/app/ios/ReactTestApp/Session.swift
+          - packages/app/ios/ReactTestApp/UIViewController+ReactTestApp.{h,m}
+          - packages/app/macos/**/*
+          - packages/app/scripts/*.js
+          - packages/app/scripts/configure.mjs
+          - packages/app/scripts/embed-manifest/main.mjs
+          - packages/app/scripts/embed-manifest/swift.mjs
+          - packages/app/scripts/embed-manifest/validate.mjs
+          - packages/app/scripts/init.mjs
+          - packages/app/scripts/template.mjs
+          - packages/app/scripts/build/xcodebuild.sh
 "platform: visionOS":
   - changed-files:
       - any-glob-to-any-file:
@@ -72,34 +72,34 @@
           - .github/actions/setup-toolchain/*
           - .github/workflows/build.yml
           - Gemfile*
-          - ReactTestApp-DevSupport.podspec
-          - common/**/*
-          - example/visionos/**/*
-          - ios/*.rb
-          - ios/ReactTestApp/*.{h,m,mm,swift}
-          - scripts/*.js
-          - scripts/configure.mjs
-          - scripts/embed-manifest/main.mjs
-          - scripts/embed-manifest/swift.mjs
-          - scripts/embed-manifest/validate.mjs
-          - scripts/init.mjs
-          - scripts/template.mjs
-          - scripts/build/xcodebuild.sh
-          - visionos/**/*
+          - packages/app/ReactTestApp-DevSupport.podspec
+          - packages/app/common/**/*
+          - packages/app/example/visionos/**/*
+          - packages/app/ios/*.rb
+          - packages/app/ios/ReactTestApp/*.{h,m,mm,swift}
+          - packages/app/scripts/*.js
+          - packages/app/scripts/configure.mjs
+          - packages/app/scripts/embed-manifest/main.mjs
+          - packages/app/scripts/embed-manifest/swift.mjs
+          - packages/app/scripts/embed-manifest/validate.mjs
+          - packages/app/scripts/init.mjs
+          - packages/app/scripts/template.mjs
+          - packages/app/scripts/build/xcodebuild.sh
+          - packages/app/visionos/**/*
 "platform: Windows":
   - changed-files:
       - any-glob-to-any-file:
           - .github/actions/init-test-app/*
           - .github/actions/setup-toolchain/*
           - .github/workflows/build.yml
-          - common/**/*
-          - example/windows/**/*
-          - scripts/*.ps1
-          - scripts/*.js
-          - scripts/configure.mjs
-          - scripts/embed-manifest/cpp.mjs
-          - scripts/embed-manifest/main.mjs
-          - scripts/embed-manifest/validate.mjs
-          - scripts/init.mjs
-          - scripts/template.mjs
-          - windows/**/*
+          - packages/app/common/**/*
+          - packages/app/example/windows/**/*
+          - packages/app/scripts/*.ps1
+          - packages/app/scripts/*.js
+          - packages/app/scripts/configure.mjs
+          - packages/app/scripts/embed-manifest/cpp.mjs
+          - packages/app/scripts/embed-manifest/main.mjs
+          - packages/app/scripts/embed-manifest/validate.mjs
+          - packages/app/scripts/init.mjs
+          - packages/app/scripts/template.mjs
+          - packages/app/windows/**/*