Migrate thermal HAL wrapper from HIDL to AIDL

Pixel HAL impl is WIP and the AIDL migration is backward compatible
with HIDL 2.0 so they can be isolated

Bug: b/205762943
Test: atest ThermalManagerServiceTest ThermalManagerServiceMockingTest
Change-Id: Ia6d132ab0b022d47c97262c4cb3e942989179fed
6 files changed