[TASK] Implement ContentBlocks cache

The whole ContentBlockDefinitionCollection object is now
cached.

Classes/Builder/ContentBlockBuilder.php

@@ -31,13 +31,13 @@
 /**
  * @internal Not part of TYPO3's public API.
  */
-class ContentBlockBuilder
+readonly class ContentBlockBuilder
 {
     public function __construct(
-        protected readonly HtmlTemplateCodeGenerator $htmlTemplateCodeGenerator,
-        protected readonly LanguageFileGenerator $languageFileGenerator,
-        protected readonly ContentBlockRegistry $contentBlockRegistry,
-        protected readonly TableDefinitionCollectionFactory $tableDefinitionCollectionFactory,
+        protected HtmlTemplateCodeGenerator $htmlTemplateCodeGenerator,
+        protected LanguageFileGenerator $languageFileGenerator,
+        protected ContentBlockRegistry $contentBlockRegistry,
+        protected TableDefinitionCollectionFactory $tableDefinitionCollectionFactory,
     ) {}
 
     /**
@@ -80,7 +80,7 @@ public function create(LoadedContentBlock $contentBlock): void
     protected function initializeRegistries(LoadedContentBlock $contentBlock): void
     {
         $this->contentBlockRegistry->register($contentBlock);
-        $tableDefinitionCollection = $this->tableDefinitionCollectionFactory->createUncached();
+        $tableDefinitionCollection = $this->tableDefinitionCollectionFactory->createUncached($this->contentBlockRegistry);
         $automaticLanguageKeysRegistry = $tableDefinitionCollection->getAutomaticLanguageKeysRegistry();
         $this->languageFileGenerator->setAutomaticLanguageKeysRegistry($automaticLanguageKeysRegistry);
     }

Classes/Definition/Factory/CompilationResult.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\ContentBlocks\Definition\Factory;
+
+use TYPO3\CMS\ContentBlocks\Registry\AutomaticLanguageKeysRegistry;
+
+final class CompilationResult
+{
+    public function __construct(
+        private readonly AutomaticLanguageKeysRegistry $automaticLanguageKeys,
+        /**
+         * @var array<string, array>
+         */
+        private readonly array $parentReferences,
+        private readonly array $mergedTableDefinitions,
+    ) {}
+
+    public function getAutomaticLanguageKeys(): AutomaticLanguageKeysRegistry
+    {
+        return $this->automaticLanguageKeys;
+    }
+
+    public function getParentReferences(): array
+    {
+        return $this->parentReferences;
+    }
+
+    public function getMergedTableDefinitions(): array
+    {
+        return $this->mergedTableDefinitions;
+    }
+}