Basic ECS

[bvssvni]

All components are allocated for all entities upfront. Bitflags with u32 is used to activate and deactive components. Large memory blocks should be stored on the heap.

[Binero]

We might not necessarily need a bitflag for every component. It'd also be nice to allow adding and removing components over time. Best way to implement this would probably be by not centralising them into one structure.

[bvssvni]

We'll do the easiest way for now.