* entity debug rendering, with command
needed to add getter method to MapEntity interface, so that's the reasoning for changing objects/npcs/player/etc
this currently brings allocs/s up to 10 (you can check by running `fps` command, se we need to look into d2debugutils and how it handles drawing text
* reverting velocity copy, broke the map entity tests. debug display wont show velocity currently.
* adding velocity debug
* Use d2vector.Position in objects
* Remove arbitrary render offset
If things are actually wrong lets figure out why
* Remove arbitrary wall offset
This broke maggot lair
* Comments and newlines in engine.go
* Comments and newlines in object.go
* Comments and newlines in animated_entity.go
* Comments and newlines in missile.go
* Comments and newlines in npc.go
* Comments and newlines in player.go
* Removed object.go (incorrectly merged it in during rebase).
* Comments and newlines in renderer.go.
* Comments and newlines in map_entity.go.
* Comments and newlines in walk_mesh.go.
* Comments and newlines in viewport.go and tile_cache.go.
* Comments and newlines in stamp.go and wilderness_tile_types.go.
* Comments and newlines in everything else.
* Move MapEntity to d2interface
* New package d2object, first object initFun
Moves objects out to their own package and implements the very first
init function, torches/braziers now gets their animation mode set at creation.
* Apply name again
* Turn on waypoints
