feat: install phpstan and resolving reported errors in PHPStan

routes/api.php

@@ -1,5 +1,6 @@
 <?php
 
+use Illuminate\Support\Facades\Route;
 /*
 |--------------------------------------------------------------------------
 | API Routes
@@ -11,6 +12,7 @@
 |
 */
 
+
 Route::group(['namespace' => 'Api'],function () {
 
     Route::post('/login', 'Auth\LoginController@login')->name('login');