ci: add macOS arm64 workflow

.gitea/workflows/qt-macos-arm64.yml

@@ -0,0 +1,49 @@
+name: qt-macos-arm64
+
+on:
+  push:
+    branches: [ main ]
+    tags: [ 'v*' ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  qt-macos-arm64:
+    runs-on: macos-arm64
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install build dependencies
+        run: |
+          set -eu
+          brew update
+          brew install cmake ninja qt
+
+      - name: Configure + build
+        run: |
+          set -eu
+          cmake -S . -B build-out -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$(brew --prefix qt)"
+          cmake --build build-out --parallel "$(sysctl -n hw.ncpu)"
+
+      - name: Pack artifacts
+        run: |
+          set -eu
+          rm -rf artifacts
+          mkdir -p artifacts
+          if [ -d build-out/qt_tray_demo.app ]; then
+            tar -C build-out -czf artifacts/qt_tray_demo-macos-arm64-run${{ github.run_number }}.app.tar.gz qt_tray_demo.app
+          elif [ -f build-out/qt_tray_demo ]; then
+            cp build-out/qt_tray_demo artifacts/qt_tray_demo-macos-arm64-run${{ github.run_number }}
+            chmod +x artifacts/qt_tray_demo-macos-arm64-run${{ github.run_number }}
+          else
+            echo 'No Qt macOS output found';
+            exit 1
+          fi
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: qt_tray_demo-macos-arm64-run${{ github.run_number }}
+          path: artifacts/
+          retention-days: 14