Add junction entities and ACL for CAICollection, CAdvowareAkten, and CPulsTeam

- Introduced new junction entities: CAICollectionCDokumente, CAdvowareAktenCDokumente, and CPulsTeamZuordnung.
- Implemented respective controllers and services for handling CRUD operations.
- Added metadata definitions for new entities, including fields, links, and indexes.
- Created language files for English and German translations for the new entities.
- Developed a script to set ACL permissions for the new junction entities across existing roles.
- Updated existing entity definitions to include new relationships and fields related to Advoware and AI Collections.

custom/Espo/Custom/Controllers/CAICollectionCDokumente.php

@@ -0,0 +1,23 @@
+<?php
+namespace Espo\Custom\Controllers;
+
+use Espo\Core\Controllers\Record;
+
+/**
+ * Junction Controller: CAICollection ↔ CDokumente
+ * 
+ * Provides REST API access to the junction table with additionalColumns:
+ * - xaifileid: XAI external file ID
+ * - syncStatus: Sync state tracking
+ */
+class CAICollectionCDokumente extends Record
+{
+    // Inherits all CRUD operations from Record controller
+    // 
+    // Available endpoints:
+    // GET    /api/v1/CAICollectionCDokumente
+    // GET    /api/v1/CAICollectionCDokumente/{id}
+    // POST   /api/v1/CAICollectionCDokumente
+    // PUT    /api/v1/CAICollectionCDokumente/{id}
+    // DELETE /api/v1/CAICollectionCDokumente/{id}
+}