Add eslint

package.json

@@ -28,7 +28,8 @@
     "electron:build:all": "npm run build:prod && electron-builder --win --mac --linux",
     "build:prod:all": "npm run build:prod && cd server && npm run build",
     "build:prod:win": "npm run build:prod:all && electron-builder --win",
-    "dev": "npm run electron:full"
+    "dev": "npm run electron:full",
+    "lint": "eslint . --ext .ts,.html"
   },
   "prettier": {
     "printWidth": 100,
@@ -78,16 +79,22 @@
     "@angular/build": "^21.0.4",
     "@angular/cli": "^21.0.4",
     "@angular/compiler-cli": "^21.0.0",
+    "@eslint/js": "^9.39.3",
+    "@stylistic/eslint-plugin-js": "^4.4.1",
+    "@stylistic/eslint-plugin-ts": "^4.4.1",
     "@types/simple-peer": "^9.11.9",
     "@types/uuid": "^10.0.0",
+    "angular-eslint": "^21.2.0",
     "autoprefixer": "^10.4.23",
     "concurrently": "^8.2.2",
     "cross-env": "^10.1.0",
     "electron": "^39.2.7",
     "electron-builder": "^26.0.12",
+    "eslint": "^9.39.3",
     "postcss": "^8.5.6",
     "tailwindcss": "^3.4.19",
     "typescript": "~5.9.2",
+    "typescript-eslint": "^8.56.1",
     "wait-on": "^7.2.0"
   },
   "build": {