Update codal.ble.json to list Utility Services and disable partial fl…

…ash.

Partial flashing disabled in codal.ble.json because for CODAL
C++ user projects (not MakeCode nor MicroPython) partial flashing
is not really usable.

codal.ble.json

@@ -11,8 +11,10 @@
         "MICROBIT_BLE_PAIRING_MODE": 1,
         "MICROBIT_BLE_DFU_SERVICE": 1,
         "MICROBIT_BLE_DEVICE_INFORMATION_SERVICE": 1,
+        "MICROBIT_BLE_UTILITY_SERVICE": 1,
+        "MICROBIT_BLE_UTILITY_SERVICE_PAIRING": 1,
         "MICROBIT_BLE_EVENT_SERVICE" : 1,
-        "MICROBIT_BLE_PARTIAL_FLASHING" : 1,
+        "MICROBIT_BLE_PARTIAL_FLASHING" : 0,
         "MICROBIT_BLE_SECURITY_LEVEL": "SECURITY_MODE_ENCRYPTION_NO_MITM"
     }
 }