Implement NeoForge non-proxyable check

[rubensworks]

Issue type:

• ➕ Feature request

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Short description:

NeoForge added the ability to blacklist proxying for Capabilities, which we should follow: neoforged/NeoForge#2245
Optionally, we could add a config option to override this behaviour (either a boolean, or list of capability id's), for when the player knows what he's doing.

[rubensworks]

Thanks for the suggestion!

[rubensworks]

Actually, let's do this in the 1.21.5 or 1.21.6 update instead, as many mods may not have support for this yet, leading to unexpected breakages for players.