feat: add Electron desktop app wrapper

package.json

@@ -0,0 +1,41 @@
+{
+  "name": "lazy-update-manager",
+  "version": "0.1.0",
+  "description": "Desktop update helper for Arch Linux and Hyprland.",
+  "main": "electron/main.cjs",
+  "type": "commonjs",
+  "scripts": {
+    "start": "npm run build:backend && electron .",
+    "build:backend": "go build -buildvcs=false -o bin/lazy-update-manager ./cmd/lazy-update-manager",
+    "dist": "npm run build:backend && electron-builder --linux AppImage,pacman,dir"
+  },
+  "keywords": [
+    "arch",
+    "hyprland",
+    "updates",
+    "electron"
+  ],
+  "author": "",
+  "license": "MIT",
+  "devDependencies": {
+    "electron": "^41.5.0",
+    "electron-builder": "^26.0.0"
+  },
+  "build": {
+    "appId": "dev.lazyupdatemanager.app",
+    "productName": "LazyUpdateManager",
+    "files": [
+      "electron/**/*"
+    ],
+    "extraResources": [
+      {
+        "from": "bin/lazy-update-manager",
+        "to": "bin/lazy-update-manager"
+      }
+    ],
+    "linux": {
+      "category": "System",
+      "icon": "system-software-update"
+    }
+  }
+}