TIF: introduce TvInputPassthroughWrapperService class to support 2-way pairing use-case.

This change adds a class which will be used for the TV input which controls an external device
which is connected to the pass-through TV input.

Bug: 15496325
Change-Id: I52d48c45570c2d62d759a9da2ab96ec8461c13f7
4 files changed