feat: add root start scripts

Author: sinedied

package.json

@@ -4,12 +4,12 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "start": "concurrently \"npm:start:*\" --kill-others",
-    "start:webapp": "npm run dev --workspace=webapp",
-    "start:api": "npm run start --workspace=api",
+    "start": "concurrently \"npm:start:*\" --kill-others --ready=\"server running|started\" --success-command=\"echo '🚀 Tous les services sont démarrés et prêts!'\"",
+    "start:burger": "npm run start --workspace=burger-webapp",
+    "start:mcp": "npm run start --workspace=burger-mcp",
+    "start:agent": "npm run dev --workspace=agent-webapp",
+    "ready": "",
     "build": "npm run build --workspaces --if-present",
-    "build:webapp": "npm run build --workspace=webapp",
-    "build:api": "npm run build --workspace=api",
     "clean": "npm run clean --workspaces --if-present",
     "lint": "xo",
     "lint:fix": "xo --fix",