Refactor back to a more modular configuration

modules/mixins/phpactor/config/templates/collection/SourceCode.php.twig

@@ -1,22 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace {{ prototype.namespace }};
-
-{% for class in prototype.classes %}
-final class {{ class.name }} implements \IteratorAggregate {
-
-  public function __construct(private array $items = []) {
-  }
-
-  public function getIterator(): \Iterator {
-    return new \ArrayIterator($this->items);
-  }
-
-  public function toArray(): array {
-    return $this->items;
-  }
-
-}
-{% endfor %}