Add functionality of updatable waveform params

[ShiiRochi]

It would be great as the next step in the package development to implement waveform auto-update of fields that can be legally updated using wavesurfer API.

Thus, lets sum up. There are drawBuffer method and a variety of set<TLERS> methods (w/ description):

• setBackgroundColor(color)
• setCursorColor(color)
• setHeight(height)
• setFilter(filters)
• setPlaybackRate(rate)
• setPlayEnd(position)
• setVolume(newVolume)
• setMute(mute)
• setProgressColor(color)
• setWaveColor(color)

Those fields, that relate to the methods above will be updated by them, all other fields in theory after being changed should result in a drawBuffer or some other method call. It also should be taken into account that some fields can be updated only through reinitialization, if such exist.

[ShiiRochi]

Published 2.3.0-beta.0 with first attempt to introduce auto-updatable params. Currently the following list of params is watched:

1. backgroundColor
2. progressColor
3. cursorColor
4. waveColor

[ShiiRochi]

I would definitely add the configuration prop called UNSTABLE_enableAutoUpdate being set to false by default, because some would like to implement auto-update in another way.