Add native Thermal Throttling API to libandroid.

Add native thermal manager API of thermal mananger service into
libandroid. Export Thermal API as NDK library.

Bug: 137151587
Bug: 136285293
Test: build, atest thermalmanager-test atest CtsThermalTestCases

Change-Id: Ia49fb2133624ffcd6168af804ae612ef2bb190f2