Add mods config file to override mods required type

[KocerPL]

I have server on aternos, and installed only jei and xaeros minimap, but unfortunately all players without this mods cannot join because of mods required type, and i can't edit mods .jar(since aternos is free service, they must disable they servers after all players left, this is why they cannot allow mods with player count modification).
Since the mods don't change gameplay or add anything, i would want them to be not required for all players, but optional. Adding this feature would make it easy for everyone without changing mods .toml config.

[ChiefArug]

Xaero's adds (unusued by default) potion effects to disable the minimap, this makes the mod required as potion effects are a synced registry. The mod would need a config option to disable these, NeoForge cannot just disable them on a whim because that would break mods.
JEI may also be required on the server side in recent versions due to vanilla disabling recipe syncing by default, but my understanding of that is not great.