Type hinting update for IDEs

- Close #11: The instantiate method in DependencyInjector has been enhanced with PHPDoc annotations that use templates. This enhancement is aimed to support improved autocompletion in IDEs like PhpStorm. Now, IDEs should be able to provide method suggestions based on the specific class being instantiated, helping developers write more accurate code more quickly. This change does not affect the functionality of the instantiate method, but greatly enhances developer experience

src/DependencyInjector.php

@@ -50,9 +50,10 @@ public function __construct()
     }
 
     /**
-     * @param class-string $className The fully qualified class name to instantiate
+     * @template T
+     * @param class-string<T> $className The fully qualified class name to instantiate
      * @param array $parameters The parameters to pass to the constructor
-     * @return object The instantiated object.
+     * @return T The instantiated object.
      * @throws ClassNotDefinedException
      * @throws ClassNotInstantiableException
      * @throws ParameterDiscoveryFailedException