Is your feature request related to a problem? Please describe.
Sodium is a general-purpose performance optimization mod. But, as you know, many people compare it with Optifine, which adds several graphics enhancements too... So since Sodium has a whole new graphics menu, what if other mods could add their own graphics enhancement toggles there too?

Describe the solution you'd like
An API which mod developers could use to add their own settings or whole new tabs of settings to Sodium's graphics settings view.

Describe alternatives you've considered
A way to create shortcut buttons that simply lead to mods' settings pages (think Mod Menu) instead of actually adjusting them from Sodium view.

Additional context
I have not contacted any mod developers that are actually interested in using this, so this is just an idea, inspired by this gist.

Not quite what you're asking for, but related: #62