ime tracing: migrate to perfetto

Add ImeTracingPerfettoImpl to be used when the flag
"android.tracing.perfetto_ime" is enabled.

Bug: 276433199
Test: enable flag android.tracing.perfetto_ime \
   + capture/visualize IME traces with winscope
Change-Id: I93dd127165ce16b2cac1e6e1cda4f6f7e029f961
3 files changed