Feat: overhaul to produce .dmg and .app on macOS build script

.github/workflows/release.yml

@@ -266,6 +266,18 @@ jobs:
             -output cagire-plugins.vst3/Contents/MacOS/cagire-plugins
           lipo -info cagire-plugins.vst3/Contents/MacOS/cagire-plugins
 
+      - uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            assets/DMG-README.txt
+            scripts/make-dmg.sh
+          clean: false
+
+      - name: Create DMG
+        run: |
+          chmod +x scripts/make-dmg.sh
+          scripts/make-dmg.sh Cagire.app .
+
       - name: Build .pkg installer
         run: |
           VERSION="${GITHUB_REF_NAME#v}"
@@ -303,6 +315,12 @@ jobs:
           name: cagire-macos-universal-vst3
           path: cagire-plugins.vst3
 
+      - name: Upload DMG
+        uses: actions/upload-artifact@v4
+        with:
+          name: cagire-macos-universal-dmg
+          path: Cagire-*.dmg
+
       - name: Upload .pkg installer
         uses: actions/upload-artifact@v4
         with:
@@ -328,7 +346,9 @@ jobs:
           mkdir -p release
           for dir in artifacts/*/; do
             name=$(basename "$dir")
-            if [[ "$name" == "cagire-macos-universal-pkg" ]]; then
+            if [[ "$name" == "cagire-macos-universal-dmg" ]]; then
+              cp "$dir"/*.dmg release/
+            elif [[ "$name" == "cagire-macos-universal-pkg" ]]; then
               cp "$dir"/*.pkg release/
             elif [[ "$name" == "cagire-macos-universal-desktop" ]]; then
               cp "$dir/Cagire.app.zip" "release/cagire-macos-universal-desktop.app.zip"