Dynamic garbage phase settings?

Checklist

[X] I've checked both open and recently closed issues to ensure this feature is not already requested.
[X] I am using the newest version of TETR.IO.
[X] I am certain this is a feature request, not a bug.
[X] I've thought this feature through properly.

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

Have you ever felt like garbage stacks up too fast, but when you modify the garbage phase time it doesn't scale along with player counts/game uptime? Well boy do I have a solution. ~~Hi, Billy Mays here~~ You know what I'll stop the infomercial joke here.

Describe the solution you'd like

It would be awesome if garbage phase time could be modified/scaled in the same way that gravity is throughout a game, so when there are less people garbage takes longer before being applied, or if the game has gone on for too long the phase speed increases to hurry things up.

Describe alternatives you've considered

This might not be such a big thing for public lobbies since the default settings for garbage phases is 0, but it would definitely be helpful in private battles/for dinguses like me who can't shake the feeling that something is wrong. It shouldn't be too hard to change it on the fly if the garbage phases settings have the same/similar properties as the gravity settings.

Additional context

Also uh, gravity phases, is the time setting for each individual phase or is it for the entire 3 phases? I'm confuzzled but that's a minor thing.

tetrio / issues