add release workflow

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+name: D
+
+on:
+  release:
+    types: [created]
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+
+    runs-on: ${{matrix.os}}
+
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: dlang-community/setup-dlang@4c99aa991ce7d19dd3064de0a4f2f6b2f152e2d7
+
+    - name: 'Build & Test'
+      run: |
+        # Build the project, with its main file included, without unittests
+        dub build -b release
+
+    - name: 'Archive'
+      run: |
+        zip cac-${{matrix.os}}.zip cac*
+        
+    - name: Upload
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+      with:
+        upload_url: ${{github.events.release.upload_url}}
+        asset_path: cac-${{matrix.os}}.zip
+        asset_name: cac-${{matrix.os}}.zip
+        asset_content_type: application/gzip