Support property events batching.

Supports batching property change events based on configured time
window in DefaultVehicleHal. This will reduce binder callbacks but
will increase latency. This is configurable from IVehicleHardware
side, default is off.

Test: atest DefaultVehicleHalTest
Bug: 305111644
Change-Id: Id703e8486fdeb98a88cc27dbebe4d79f232f7e3d