Add a basic reusable go test workflow (#20)

Add a basic reusable go test workflow that runs go test with and without
race detector with options to pick which.

Author: masih

.github/workflows/go-test.yml

@@ -0,0 +1,47 @@
+name: Go
+
+on:
+  workflow_call:
+    inputs:
+      go-version:
+        required: false
+        type: string
+        default: 'stable'
+      test:
+        required: false
+        type: boolean
+        default: true
+      race:
+        required: false
+        type: boolean
+        default: true
+
+jobs:
+  test:
+    name: ${{ matrix.name }}
+    runs-on: ubuntu-latest
+    if: inputs.test || inputs.race
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: Test
+            flags: ''
+            enabled: ${{ inputs.test }}
+          - name: Test (race)
+            flags: '-race'
+            enabled: ${{ inputs.race }}
+        exclude:
+          - enabled: false
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '${{ inputs.go-version }}'
+      - name: Run repo-specific setup
+        uses: ./.github/actions/go-test-setup
+        if: hashFiles('./.github/actions/go-test-setup') != ''
+      - name: Run tests
+        run: go test ${{ matrix.flags }} ./...