SurfaceFlinger TimeStats Metrics

Add timestats metrics for SurfaceFlinger. Keep track of global metrics
like total frames, missed frames, frames fellback to client
compositions, etc, as well as layer timing metrics like the delta
combination of postTime, desiredPresentTime, acqureTime, latchTime,
presentTime, etc. This metric is aimed at GMScore.

Test: dumpsys SurfaceFlinger --timestats [go/sf-timestats for more args]
Bug: b/70388650
Change-Id: I6e4545aef62f7893020533a4e7521541ea453ecd
Merged-In: I6e4545aef62f7893020533a4e7521541ea453ecd