Add CMietinkasso entity and localization support

- Introduced a new entity "CMietinkasso" with its metadata definitions, including fields, links, and indexes.
- Added controller for CMietinkasso to handle business logic.
- Created localization files for CMietinkasso in multiple languages (e.g., English, German, Spanish, etc.) to support internationalization.
- Updated global JSON files to include references to the new entity.
- Modified configuration files to integrate CMietinkasso into the application structure.

custom/Espo/Custom/Resources/i18n/lt_LT/CMietinkasso.json

@@ -0,0 +1,10 @@
+{
+  "links": {
+    "meetings": "Susitikimai",
+    "calls": "Skambučiai",
+    "tasks": "Užduotys"
+  },
+  "labels": {
+    "Create CMietinkasso": "Sukurti Mietinkasso"
+  }
+}