Implement new positional system

[edgarssilva]

Description

Due to different anchor points, y-sorting and possible virtual jumps, etc., a new system that implements position and sorting might be a good idea. This could work around the existing Transform component and be implemented in different ways. One way is to represent specific places like the feet or bottom of an item, removing the necessity to have different offsets and other workarounds.

Talked a bit in #247.

Alternatives & Prior Art

No response