feat: add echo cancellation and noise suppression for recoding

[sapphi-red]

This PR adds echo cancellation and noise suppression feature for the recoding feature.

I recently use the recoding feature to record a video for a talk. I first recorded while I was using a fan and noticed that the noise caused by the fan was on the video. This PR will help for that kind of cases.

The UI looks like this now:

The echo cancellation feature uses the browser built-in option (MediaTrackConstraints::echoCancellation).

The noise suppression feature uses the browser built-in option (MediaTrackConstraints::noiseSuppression) or my @sapphi-red/web-noise-suppressor package. My package supports multiple backends, but I added RNNoise (a well-known model, used in OBS) and GTCRN (state-of-the-art one in lightweight models). In my experience, RNNoise and GTCRN works better than the browser built-in one. You can try it at https://web-noise-suppressor.sapphi.red/.

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commit: 890ac55