Add new screenrecording winscope meta data

New mp4 track with following meta data:
- Metadata version
- Realtime-to-monotonic time offset
- Monotonic timestamp for each frame

Bug: 235196806
Test: record and view traces + screen recording with winscope
Change-Id: If43e43bc79be960afe9197480c8c311b09111904
Merged-In: If43e43bc79be960afe9197480c8c311b09111904