Gets rid of hasvar usage and moves up some vars (#18262)

* Gets rid of hasvar usage

* thiiis

* moves damtype to /obj/item

* throwing

* Move vars moved

* matter as well

Pretty much only used for the robot lathe and when crafting...When you could only smelt down obj/item for its materials

* Update floor_light.dm

* exploitable

* this can be moved up...

* move persist to /item

you can't ever place /obj in storage anyway...It would imply you can store the supermatter, which I think we don't want.

* gets rid of being_used

I added this for xenoarch, that was a mistake

* move these

* move these to the base file

* Makes floorlight autolathe recipe not shit

* Update floor_light.dm

* Update floor_light.dm

* Mechs no longer gib when hitting things

---------

Co-authored-by: Selis <12716288+ItsSelis@users.noreply.github.com>

code/modules/materials/materials/_materials.dm

@@ -61,7 +61,7 @@ var/list/name_to_material
  * Arguments:
  * - breakdown_flags: A set of flags determining how exactly the materials are broken down. (unused)
  */
-/obj/proc/get_material_composition(breakdown_flags=NONE)
+/obj/item/proc/get_material_composition(breakdown_flags=NONE)
 	. = list()
 	for(var/mat in matter)
 		var/datum/material/M = GET_MATERIAL_REF(mat)
@@ -78,7 +78,7 @@ var/list/name_to_material
 			else
 				.[M] = matter[mat]
 
-/obj/proc/set_custom_materials(list/materials, multiplier = 1)
+/obj/item/proc/set_custom_materials(list/materials, multiplier = 1)
 	SHOULD_NOT_OVERRIDE(TRUE)
 
 	if(!LAZYLEN(materials))