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/i18n/en_US/CVmhMietverhltnis.json

@@ -3,6 +3,7 @@
         "status": "Status",
         "vmhRumungsklages": "Eviction Lawsuits",
         "mietinkassos": "Rent Collection",
+        "kndigungen": "Terminations",
         "nutzungsart": "Type of Use",
         "kndigungsgrundWohnraum": "Reason for Termination",
         "auszugsfrist": "Move-out Deadline",
@@ -36,6 +37,7 @@
         "tasks": "Tasks",
         "vmhRumungsklages": "Eviction Lawsuits",
         "mietinkassos": "Rent Collection",
+        "kndigungen": "Terminations",
         "vmhbeteiligtevermieter": "Landlords",
         "vmhbeteiligtemieter": "Tenants",
         "contactsMietverhltnis": "Portal Users",
@@ -47,7 +49,8 @@
     "labels": {
         "Create CVmhMietverhltnis": "Create Mietverhältnis",
         "Initiate Eviction": "Initiate Eviction Lawsuit",
-        "Initiate Rent Collection": "Initiate Rent Collection"
+        "Initiate Rent Collection": "Initiate Rent Collection",
+        "Initiate Termination": "Create Termination"
     },
     "messages": {
         "confirmEviction": "Do you really want to initiate an eviction lawsuit from this tenancy?",
@@ -55,7 +58,10 @@
         "evictionError": "Error creating eviction lawsuit",
         "confirmRentCollection": "Do you really want to initiate rent collection from this tenancy?",
         "rentCollectionCreated": "Rent collection has been created successfully",
-        "rentCollectionError": "Error creating rent collection"
+        "rentCollectionError": "Error creating rent collection",
+        "confirmTermination": "Do you really want to create a termination notice from this tenancy?",
+        "terminationCreated": "Termination notice has been created successfully",
+        "terminationError": "Error creating termination notice"
     },
     "options": {
         "status": {