Added merge workflow for pull-requests with master as destination

.github/workflows/merge.yml

@@ -0,0 +1,35 @@
+name: Merge checks
+
+on:  
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x]
+    
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - name: Build
+      run: |
+        npm install
+        npm run build
+    
+    - name: Get version
+      run: echo "::set-output name=version::v$(./ci/getVersion.sh)"
+      id: version
+
+    - name: Verify version
+      run: |
+        ./ci/verifyVersion.sh ${{ steps.version.outputs.version }}