feat(entity): add lazy loading support for collections

- Created EntityWithElasticCollection for testing lazy loading
- Added LazyLoadingTest to verify collection initialization behavior
- Implemented various tests for lazy loading scenarios

Author: Spamercz

tests/SpameriTests/Elastic/Data/Entity/EntityWithElasticCollection.php

@@ -0,0 +1,25 @@
+<?php declare(strict_types = 1);
+
+namespace SpameriTests\Elastic\Data\Entity;
+
+/**
+ * Entity with an ElasticEntityCollection for testing lazy loading of elastic collections.
+ */
+class EntityWithElasticCollection extends \Spameri\Elastic\Entity\AbstractElasticEntity
+{
+
+	/**
+	 * @param \Spameri\Elastic\Entity\Collection\ElasticEntityCollection<\SpameriTests\Elastic\Data\Entity\SimpleTestEntity> $related
+	 */
+	public function __construct(
+		#[\Spameri\Elastic\Mapping\Entity(class: \Spameri\Elastic\Entity\Property\ElasticId::class)]
+		public \Spameri\Elastic\Entity\Property\ElasticIdInterface $id,
+		public string $name,
+		#[\Spameri\Elastic\Mapping\ElasticCollection(class: \SpameriTests\Elastic\Data\Entity\SimpleTestEntity::class)]
+		public \Spameri\Elastic\Entity\Collection\ElasticEntityCollection $related,
+	)
+	{
+		parent::__construct($id);
+	}
+
+}