feat: add index controller and route

app/Http/Controllers/IndexController.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class IndexController extends Controller
+{
+    //
+    public function index()
+    {
+        return view('index');
+    }
+}

routes/web.php

@@ -1,7 +1,6 @@
 <?php
 
+use App\Http\Controllers\IndexController;
 use Illuminate\Support\Facades\Route;
 
-Route::get('/', function () {
+Route::get('/' , [IndexController::class , 'index']);
-    return view('welcome');
-});