build: add clean script (#855)

Author: setchy

package.json

@@ -5,6 +5,7 @@
   "main": "main.js",
   "scripts": {
     "build": "webpack --config webpack.prod.js",
+    "clean": "rimraf build coverage node_modules",
     "watch": "webpack --config webpack.common.js --watch",
     "make:linux": "electron-builder --linux",
     "make:macos": "electron-builder --mac --universal",
@@ -137,6 +138,7 @@
     "postcss-loader": "8.1.1",
     "prettier": "3.2.5",
     "react-test-renderer": "18.2.0",
+    "rimraf": "5.0.5",
     "style-loader": "3.3.4",
     "tailwindcss": "3.4.1",
     "ts-jest": "29.1.2",