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[#1476] Add duration and processed event, visual test migration (#1474)


Closes #1476

## Changes:

- Fixes #1476: Ensure all sounds stop when game is stopped and `Sound.play()` respects when game is in stopped state
- Added: Add `duration` to `Sound` and `AudioInstance`, when using `AudioBuffer`
- Added: Add `processed` event to `Sound` that receives processed data (`string | AudioBuffer`)
- Changed: Change `Sound.stop()` to always stop and rewind the track, even if sound is not playing
- Add `wireEngine` test coverage in addition to new changes
- Migrate audio visual tests to Storybook
  - Uses Campire and Forest 1 loops from [PremiumBeat](https://www.premiumbeat.com/blog/free-ambient-background-tracks/)

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