Some AudioWorklet refactoring and improvements

[b-ma]

WPT Results are now

before

- # pass: 168
- # fail: 21
- # type error issues: 0

after

- # pass: 173
- # fail: 15
- # type error issues: 0

Remaining issues:

• AudioParam does not behave as expected -> needs to be reviewed in upstream
• Configurable render quantum size -> to be implemented in upstream
• Issue with how currentTime and currentFrame are inited -> a bit quite tricky probably, means we should be able to request the information to the Rust audio thread somehow
• Blob can be deserialized in Node, which makes audioworkletnode-onerror.https.html fail
• Transfer of input / output underlying arrayBuffers is forbidden on our side (causes Segmentation Fault) -> really don't see why it is allowed anyway, probably won't fix
• One JS tick per quantum, cf. Yield once to VM per quantum, another thread prio crate, some timings, use condvar instead of crossbeam; no improvements #128
• Plus one or two minor things

[b-ma]

WPT against upstream main

RESULTS:
- # pass: 5137
- # fail: 440
- # type error issues: 0
> wpt duration: 2:44.291 (m:ss.mmm)