Name of the mod: Phosphor
Url about it (
www.minecraftforum.net):
https://www.curseforge.com/minecraft/mc-mods/phosphorWhy do you think it should be allowed: This is a mod created to streamline preformance by optimising many things to do with lighting.
This mod can be installed on a server as a plugin (fabric), even though it cannot be used with Paper and therefore probably useless.