chore: Add API route for user authentication

backend/composer.json

@@ -12,6 +12,7 @@
   "require": {
     "php": "^8.2",
     "laravel/framework": "^11.9",
+    "laravel/sanctum": "^4.0",
     "laravel/tinker": "^2.9"
   },
   "require-dev": {
@@ -78,4 +79,4 @@
       "email": "later@later.later"
     }
   ]
-}
+}