feat: always use attributes instead of annotations

src/Contracts/AddsAnnotations.php

@@ -1,21 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Pest\Contracts;
-
-use Pest\Factories\TestCaseMethodFactory;
-
-/**
- * @internal
- */
-interface AddsAnnotations
-{
-    /**
-     * Adds annotations to the given test case method.
-     *
-     * @param  array<int, string>  $annotations
-     * @return array<int, string>
-     */
-    public function __invoke(TestCaseMethodFactory $method, array $annotations): array;
-}