Add generate_vehicle_property_enums repo hook.

This repo hook will check whether the generated enum definition files
require update if VehicleProperty.aidl is updated and prompt user
to run generate_annotation_enums.py if requires update.

The repo hook will do nothing if the preupload files does not contain
VehicleProperty.aidl file.

Test: Manual test
Bug: 286286188
Change-Id: Iea1fdb26d8a76c5aff346ca5cb38ed145fe957d7