add GitHub Actions release workflow for Windows and macOS

.github/workflows/release.yml

@@ -0,0 +1,41 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - run: npm ci
+      - run: npm run electron:build:win
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: false
+          WIN_CSC_LINK: ''
+      - uses: softprops/action-gh-release@v2
+        with:
+          files: releases/*.exe
+
+  build-mac:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - run: npm ci
+      - run: npm run electron:build:mac
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: false
+      - uses: softprops/action-gh-release@v2
+        with:
+          files: releases/*.dmg