Add rubberband

**Is your feature request related to a problem? Please describe.**
Adding audio stretching library rubberband.

**Describe the solution you'd like**
rubberband filter enabled and available in runtime

**Describe alternatives you've considered**
atempo is available but produced audio quality is lower

**Additional context**
I tried this:

```
await ffmpeg.run('-i', 'dl.wav', '-filter_complex', "rubberband=pitch=1.5", 'dl-result.wav');
```

And it displays this in console:
```
[fferr] [AVFilterGraph @ 0x1a6fb40] No such filter: 'rubberband'
[fferr] Error initializing complex filters.
```