Collision grouping

[janfokke]

If my game has some trees and a couple of boundaries then I don't want these to check for collisions on each other.

In the current CollisionComponent, it is not possible to specify this

[lithiumtoast]

Hello @janfokke,

Collisions will definitely need to be revisited all together.

[janfokke]

I already did some performance upgrades and added layers in my own fork https://github.com/janfokke/MonoGame.Extended/tree/collisionLocal