Add trigger collisions.

[moisesjpelaez]

Taking bits from here from @Dev-MarkoF. One thing is manifolds should be cleared/detached in World.hx (but I'm not sure what does that mean).

I hope this helps as a starting point if it doesn't close #45 .

Tested and working in Armory 2024.07

[saharan]

Thank you, it definitely helps!
I need to edit and test it before merge though, e.g. shapes should have the isTrigger flag, not rigid bodies because collision events occur per shape pair.