Bass-boosting

@SplitPixl is already working on this.

Since Sep 15, 2021.

• #809 by @SplitPixl — open

### Is your feature request related to a problem? Please describe.

Not applicable

### What is your ideal solution to the problem?

A bass-boost command would enhance the listening experience of those who like to play metal, dubstep or rock

### How would this feature be used?

There are two variations in which this feature could be installed:

Simple form (toggle on/off)
!Bass-boosting

Elaborated form (percentage)
!Bass-boosting [0-100]

### Additional Info

Only the DJ and higher can use this command.
The Bass-boost modification resets after the bot has left the channel
This means that the default is no bass-boost (when the bot joins a channel)

The request may seem similar to request #475 but I put emphasis on an increase of the undertones only.
A bass-boost command would enhance the listening experience of those who like to play metal, dubstep or rock

### Checklist

- [X] I have checked [the documentation](https://jmusicbot.com/) to make sure this feature doesn't already exist
- [X] I have searched for [similar feature requests](https://github.com/jagrosh/MusicBot/labels/enhancement)
- [X] I have confirmed that my requests is **not** on the [list of things that will not be added](https://jmusicbot.com/things-that-wont-be-added)
- [X] I am running the latest version of the bot: 

Review linked pull request #809 and the related request #475 first, since this feature may already be under implementation. The requested behavior is a DJ-or-higher bass-boost command supporting toggle or 0–100 percentage input, with the setting reset when the bot leaves the channel.

Written by the indexing model from the issue text.