Powerline synthetic tests

# Powerline

Powerline is a test suite that's designed to simulate battery-draining scenarios.

## Background Audio Playback

- Podcast (Vorbis format)

- Podcast (Opus format)

- Podcast (MP3 format)

- Podcast (AAC format)

## Screen-on Video Playback (Single-stream)

- VP9 - 720p

- VP9 - 480p

- VP9 - 360p

- VP9 - 240p

- AV1 - 1080p

- AV1 - 720p

- AV1 - 480p

- AV1 - 360p

- AV1 - 240p

- .H264 - 1080p

- .H264 - 720p

- .H264 - 480p

- .H265 - 1080p

- .H265 - 720p

## Screen-on Video Playback (Multi-stream)

- VP9 - 240p + AV1 - 360p

- H264 - 720p + VP9 - 240p + AV1 - 360p

- 4x VP9, 2x AV1