Add GitHub Action for automatic extension builds on tag push

Author: helloamdeva

.github/workflows/release.yml

@@ -0,0 +1,52 @@
+name: Build and Release Extension
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '22.x'
+        
+    - name: Install dependencies
+      run: npm install
+      
+    - name: Build extension
+      run: npm run compile
+      
+    - name: Package extension
+      run: npx @vscode/vsce package --no-dependencies
+      
+    - name: Get version from tag
+      id: get_version
+      run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+      
+    - name: Create Release
+      uses: softprops/action-gh-release@v2
+      with:
+        files: vertex-devcode-*.vsix
+        body: |
+          ## Vertex DevCode ${{ github.ref_name }}
+          
+          ### Installation
+          Download `vertex-devcode-${{ steps.get_version.outputs.VERSION }}.vsix` and install:
+          ```bash
+          code --install-extension vertex-devcode-${{ steps.get_version.outputs.VERSION }}.vsix
+          ```
+          
+          ### Changes
+          See commit history for details.
+        draft: false
+        prerelease: false
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}