uwb(hal): Add a capabilities mechanism for vendor commands

For the vendor commands defined for Android, allow UWB chip vendors to
optionally expose some of the features defined in a given version.

Without this mechanism, any vendor commands added has to be supported by
all chip vendors unconditionally (which may not be feasible based on
hardware capabilities).

Bug: 197886322
Test: Compiles

Change-Id: I917f2dc0d203ba9304f58955ac3cdb9d1735106c