Add libraries to capture traces and record screen

Add libraries to capture data which can be used to help identify
flicker issues in Android. Capture screen recordings to a video
file to help with debugging.

- capture winscope traces (SurfaceFlinger and WindowManager traces)
- capture screen contents to video file
- added assets and folder structure for future tests

Bug: 64532606
Test: atest FlickerLibTest
Change-Id: I830de3aaefc5367ce45d09e2f7ee265cf53a8bdf