create gBsConstructorMap; add wrapPassthrough

Similar to gBnConstructorMap, this map helps wrapping a local
interface with the smallest BsFoo possible. They are added
in Static.h/cpp.

Added HidlPassthroughSupport.h/cpp to hold wrapPassthrough.

Also fixes a few Return object isOk() checks.

Fix: 33307350

Test: hidl_test

Change-Id: I92a7283699bfe5b022df5ab5a9ead5690477ea97
7 files changed