feat: initialize frontend package.json and remove root dev scripts

Author: beginwebdev2002

frontend/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "ng serve --configuration=development",
     "build": "ng build",
-    "preview": "ng serve --configuration=production",
+    "preview": "ng serve --configuration=production"
   },
   "dependencies": {
     "@angular/animations": "^21.1.3",

package.json

@@ -3,11 +3,7 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
-  "scripts": {
-    "dev": "concurrently \"npm run dev:frontend\" \"npm run dev:backend\"",
-    "dev:frontend": "cd frontend && npm run dev",
-    "dev:backend": "cd backend && npm run start:dev"
-  },
+  "scripts": {},
   "repository": {
     "type": "git",
     "url": "git+https://github.com/beginwebdev2002/fullstack-mavluda.git"