Add audio filter support (speed, pitch, etc)

[ZeNyfh]

There is issue #47 however that was very broad and included more than just audio filters, making this its own issue.

These 2 features are a priority, however this is not an extensive list, more features may come from this.

• speed
• pitch

[ZeNyfh]

set to priority high as this has been requested by users.

[ZeNyfh]

I am working on this (while at college on a vpn) and I have it working in a test environment, all I need to do is move the logic into commands and this will finally be a feature.

[9382]

bugs to figure out, keeping this open until resolved (To be specific, Zenyfh has some weird persistance issues with vibrato beyond restarts and mine just doesnt work at all)

[9382]

Update: It seems the filters don't like working together, and one of the filters (which to be specific is random) will not work while the other will. E.g. pitch doesnt work but vibrato does; restart instance; pitch works and vibrato doesn't. Very bizarre behaviour, will need to figure this out

[9382]

Both filters now correctly apply. Beyond some cleanup of how we want to access filters (done) and some arg filtering for the user-facing commands, this is pretty much complete

[ZeNyfh]

fixed in https://github.com/ZeNyfh/gigavibe-java-edition/commit/6b8434a6fda132bfd235f43b2f1a1c740498e612