Remove "Core" project's dependence on Minecraft

[mjarduk]

I'd like to point out that the KeyboardComponent class in the "Core" module, used by the (duh) ingame keyboard to communicate with the computer relies on Minecraft's player class. I'm not exactly sure how it's used, but if I were to guess it could probably be swapped for a proxy class/interface that we could use instead.

[JasonTheKitten]

Good catch! I'm surprised Gradle didn't complain about that, since :Core shouldn't have a dep declared on the Minecraft code
It's supposed to be used for identifying the player, original OC had some stuff pertinent to putting player names in events if enabled and restricting who can use a compiter and stuff IIRC
But the code is just set to null rn and half of it is commented out