feat: electron packaging, build scripts, gitignore and docs update

electron/main.js

@@ -0,0 +1,13 @@
+const { app, BrowserWindow } = require('electron')
+const path = require('path')
+
+app.whenReady().then(() => {
+  const win = new BrowserWindow({
+    fullscreen: true,
+    autoHideMenuBar: true,
+    webPreferences: { nodeIntegration: false }
+  })
+  win.loadFile(path.join(__dirname, '..', 'dist', 'index.html'))
+})
+
+app.on('window-all-closed', () => app.quit())

electron/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "mygame-electron",
+  "version": "1.0.0",
+  "private": true,
+  "main": "main.js",
+  "scripts": {
+    "pack:mac": "npx @electron/packager . MyGame --platform=mas --arch=arm64,x64 --out=../release --overwrite",
+    "pack:win": "npx @electron/packager . MyGame --platform=win32 --arch=x64 --out=../release --overwrite"
+  },
+  "devDependencies": {
+    "electron": "^30.0.0",
+    "@electron/packager": "^18.0.0"
+  }
+}