Expose necessary SystemApi as test API for CEC CTS

This CL annotates multiple APIs in the HdmiControlManager as Test APIs.
Also creates a Test api wrapper for aidl interface IHdmiControlService.
HdmiPortInfo is the param under test that is also annotated as Test API.

Test: atest android.hardware.hdmi.cts
Bug: 155113872
Change-Id: I58b483eaaa5fe08f90415a7e044c30a28dc7d7c2