feat: Implement eviction lawsuit initiation from Kündigung with related data handling

custom/Espo/Custom/Controllers/CKuendigung.php

@@ -2,6 +2,26 @@
 
 namespace Espo\Custom\Controllers;
 
+use Espo\Core\Exceptions\BadRequest;
+use Espo\Core\Api\Request;
+
 class CKuendigung extends \Espo\Core\Templates\Controllers\BasePlus
 {
+    /**
+     * POST Action: Initiate eviction lawsuit from Kündigung
+     */
+    public function postActionInitiateEviction(Request $request): array
+    {
+        $data = $request->getParsedBody();
+        
+        $id = $data->id ?? null;
+        if (!$id) {
+            throw new BadRequest('No Kündigung ID provided');
+        }
+        
+        $service = $this->getRecordService();
+        $result = $service->initiateEviction($id);
+        
+        return $result;
+    }
 }