Add GT06 protocol support on port 5023

- Added GT06_PORT configuration to CloudronManifest.json
- GT06 protocol now available on port 5023 (standard port)
- Enables support for GT06 GPS tracker devices
- Tested and verified port connectivity

CloudronManifest.json

@@ -72,6 +72,12 @@
       "description": "Port over which Teltonika clients can connect",
       "defaultValue": 5027,
       "containerPort": 5027
+    },
+    "GT06_PORT": {
+      "title": "GT06 Protocol Port",
+      "description": "Port over which GT06 clients can connect",
+      "defaultValue": 5023,
+      "containerPort": 5023
     }
   },
   "website": "https://www.traccar.org",