Add Support for Attribute Modifiers

[SkyLicks]

Currently, Atlas does not have any support for the Minecraft item attribute modifiers. https://minecraft.gamepedia.com/Attribute

Specifically, any speed modifying attribute to items would trigger false positives with any Atlas dependant anti cheat.

I think this should be added because currently, any server wity custom items is not be able to use most speed checks for any atlas dependant anti cheat.

[funkemunky]

Good idea. I can't believe I haven't responded to this one. I'll get to it for the v1.6 update. I will close this issue once it is implemented.