Remove appveyor pipeline files as we are using github actions now

add CODEOWNERS file
Add steps to identify change path so that we can publish nuget based on changed project

Author: Gurpreet Singh

.github/CODEOWNERS

@@ -0,0 +1 @@
+*   @SonOfSardaar @MehdiK

.github/workflows/build.yml

@@ -7,7 +7,7 @@ on:
       runPublish:
         description: 'Publish Nuget ?'
         required: true
-        default: 'false'
+        default: false
         type: boolean
 
 jobs:
@@ -34,8 +34,14 @@ jobs:
         id: gitversion
 
       - name: Format NuGet version
-        run: |         
-          packageVersion="${{ steps.gitversion.outputs.majorMinorPatch }}.${{steps.gitversion.outputs.preReleaseNumber}}"
+        run: |
+          buildNumber="${{steps.gitversion.outputs.preReleaseNumber}}${{ steps.gitversion.outputs.buildMetaData }}"
+          
+          if [[ "${GITHUB_REF}" != "refs/heads/${{ github.event.repository.default_branch }}" ]]; then
+            buildNumber="${buildNumber}-beta"
+          fi
+          
+          packageVersion="${{ steps.gitversion.outputs.majorMinorPatch }}.${buildNumber}"
           echo "packageVersion=$packageVersion" >> $GITHUB_OUTPUT
         id: formatversion
 
@@ -63,6 +69,8 @@ jobs:
 
       - name: Run tests with coverage
         working-directory: src
+        env:
+          DiffEngine_Disabled: 'true'
         run: >-
           dotnet test 
           --configuration Release 
@@ -136,6 +144,21 @@ jobs:
           name: release-notes
           path: release-notes.md
 
+      - name: Check for changes in Samples
+        id: changes
+        run: |
+          if git diff --quiet origin/main HEAD -- src/Samples/; then
+            echo "SamplesUpdated=false" >> $GITHUB_OUTPUT
+          else
+            echo "SamplesUpdated=true" >> $GITHUB_OUTPUT
+          fi
+          
+          if git diff --quiet origin/main HEAD -- src/TestStack.BDDfy/; then
+            echo "BddfyUpdated=false" >> $GITHUB_OUTPUT
+          else
+            echo "BddfyUpdated=true" >> $GITHUB_OUTPUT
+          fi
+
       - name: Create NuGet package
         working-directory: src
         run: >-
@@ -160,7 +183,7 @@ jobs:
   publish-nuget:
     runs-on: ubuntu-latest
     needs: build
-    if: github.event.inputs.runPublish == 'true' && github.ref_name == github.event.repository.default_branch
+    if: github.event.inputs.runPublish == 'true' || github.ref_name == github.event.repository.default_branch
     environment: 
       name: Publish
       url: https://www.nuget.org/packages/TestStack.BDDfy/