Add termination (Kündigung) functionality and related translations

- Implemented the ability to initiate terminations from Mietverhältnisse.
- Added new fields and options for terminations in both German and English language files.
- Updated metadata definitions to include relationships for terminations with Mietobjekte and Beteiligte.
- Enhanced the service layer to handle termination creation, including linking relevant entities and copying documents.
- Updated configuration timestamps for deployment.

custom/Espo/Custom/Resources/metadata/clientDefs/CKndigung.json

@@ -33,5 +33,31 @@
             }
         ]
     },
-    "iconClass": "fas fa-circle-stop"
+    "iconClass": "fas fa-file-contract",
+    "relationshipPanels": {
+        "vmhMietverhltnises": {
+            "layout": null,
+            "selectPrimaryFilterName": null
+        },
+        "mietobjekte": {
+            "layout": null,
+            "selectPrimaryFilterName": null
+        },
+        "kuendiger": {
+            "layout": null,
+            "selectPrimaryFilterName": null
+        },
+        "gekuendigte": {
+            "layout": null,
+            "selectPrimaryFilterName": null
+        },
+        "dokumenteskuendigung": {
+            "layout": null,
+            "selectPrimaryFilterName": null
+        },
+        "contactsKuendigung": {
+            "layout": null,
+            "selectPrimaryFilterName": "portalUsers"
+        }
+    }
 }