refactor: rename controller to Controller

Author: paulbalandan

Diff for: phpstan-baseline.php

@@ -16573,12 +16573,6 @@
 	'count' => 2,
 	'path' => __DIR__ . '/tests/system/Router/RouteCollectionTest.php',
 ];
-$ignoreErrors[] = [
-	// identifier: class.nameCase
-	'message' => '#^Class CodeIgniter\\\\Controller referenced with incorrect case\\: CodeIgniter\\\\controller\\.$#',
-	'count' => 2,
-	'path' => __DIR__ . '/tests/system/Router/RouteCollectionTest.php',
-];
 $ignoreErrors[] = [
 	// identifier: missingType.return
 	'message' => '#^Method CodeIgniter\\\\Router\\\\RouteCollectionTest\\:\\:getCollector\\(\\) has no return type specified\\.$#',

Diff for: tests/system/Router/RouteCollectionTest.php

@@ -14,7 +14,7 @@
 namespace CodeIgniter\Router;
 
 use App\Controllers\Product;
-use CodeIgniter\controller;
+use CodeIgniter\Controller;
 use CodeIgniter\Exceptions\PageNotFoundException;
 use CodeIgniter\HTTP\Method;
 use CodeIgniter\Test\CIUnitTestCase;
@@ -243,10 +243,10 @@ public function testAddRecognizesCustomNamespaces(): void
         $routes = $this->getCollector();
         $routes->setDefaultNamespace('\CodeIgniter');
 
-        $routes->add('home', 'controller');
+        $routes->add('home', 'Controller');
 
         $expects = [
-            'home' => '\\' . controller::class,
+            'home' => '\\' . Controller::class,
         ];
 
         $routes = $routes->getRoutes();