Introduce getPropertyConfig to IVehicleHardware

This function gets only one property config instead of getting all.
This is useful to let IVehicleHardware to return one config or
not_supported for early boot required properties when not all property
configs are available.

Test: Local run on cf_auto
atest DefaultVehicleHalTest
Bug: 342470570

Change-Id: I0a8aec95007e901ceffce1ee3ead1f6bbeb7a089