Update HintManager to use NDK backend

- Update HintManager and its aidl types to use NDK backend
- Switch HintManager to using PowerHAL's WorkDuration
- Update SDK WorkDuration.java to no longer be parcelable,
    since it isn't being sent over binders anymore.
- Remove duplicate WorkDuration in powermanager in favor of PowerHAL's

Bug: 315894228
Test: atest HintManagerServiceTest
Test: atest PerformanceHintNativeTestCases
Test: atest PerformanceHintManagerTest
Change-Id: Ibc5a3aa96e73a225fce980811694ee02bdabb963