* Added struct skeleton for EntityCoordinates.
* Polish EntityCoordinates, add tests, add EntityCoordinates to Transforms
* Doc cleanup
* Remove useless code
* Return offset 0 when you don't have a parent
* Test for making sure EntityCoordinates for entities without parents have offset 0
* Use parent transform's GridId for GetGridId.
* Adds various methods, checks and tests
* Replace GridCoordinates with EntityCoordinates
* EyeManager.WorldToScreen fix
* Address reviews
* Fix za buildo
* Fix one transform test
* Fix the remaining tests
* Remove duplicate
* Remove another merge duplicate
* Fix property
* Rename most usages of GridCoordinates to EntityCoordinates.
* Add WithEntityId method to EntityCoordinates.
* Fix EntityCoordinates usage in GetEntitiesInRange
* Remove cursed IMapGrid method, change naming.
* Makes GridTileLookupSystem use EntityCoordinates
Co-authored-by: Acruid <shatter66@gmail.com>
Co-authored-by: Víctor Aguilera Puerto <zddm@outlook.es>