Rename HVAC_FAN_POSITION to HVAC_FAN_DIRECTION

Rename the properties to be consistent with VHAL namings.
Also remove FAN_DIRECTION_FACE_AND_FLOOR and
FAN_DIRECTION_DEFROST_AND_FLOOR.

Bug: 72221544
Test: Unit tests pass
Change-Id: Ie26525a2b0e5f6e74678ee33274ee44faa570a4a
9 files changed