libperfmgr: allow hints placed before NodeLooperThread starts

Also add dumps for active request/hint per node

Bug: 147840817
Test: boost flame
Test: adb shell /data/nativetest64/libperfmgr_test/libperfmgr_test
Change-Id: I4898101f5c8a8d1c69de2caf9ad6f5b4a106f6c6
16 files changed