Split VHAL property into a separate AIDL interface.

Split VHAL property definitions and enums out from the VHAL interface
so that we can update the property separatly. This allows us to
backport new property definition to older releases more easily.

Test: Manual build
Bug: 264600792
Change-Id: I6040a1d4d7832a970a5ad5e5a28c359b15b402fb