[Feature Request] Fog falloff

[oqipoDev]

Can you add a fog falloff slider? It would control the distance (in percentage) where the fog starts rendering, like Custom Fog, or more recently, Simple Fog Control.

Differently from these mods though, I'd suggest to only feature the fog start parameter, to make it simpler and easier for users, as these mods can get a little overkill with customizability