Update doc for GLOVE_BOX_DOOR_POS.

Part of a large doc update. Add doc for new supported value range
APIs. For be backward compatible with older VHAL clients still
using deprecated fields, we still require the old fields to be
populated.

This CL also updates the metadata file.

Test: None
Bug: 383184445
Flag: EXEMPT no code change
Change-Id: I79946e5b325844d22968047e39aa34b980b1d4ba