thermalservice: plumb up Thermal HAL 2.0 and add dump

Thermal HAL 2.0 provides multiple levels of thermal mitigation callback,
currently mapping ThrottlingSeverity::SEVERE and above to is_throttling
to keep same behavior.
In coming CL, the thermalservice API and hardware property manager
service will be updated.

(CL formatted with frameworks/native/.clang-format)

Bug: 111086696
Fixes: 118455688
Test: manually on a b1c1 with ThermalHAL 2.0
Tets: adb shell dumpsys thermalservice
Change-Id: I523edd1bfdf70ab6af07f0a5e996db38a9ae3864