Two-handed component (#19365)

* Adds twohanded and ports some things to use it

this will require update_appearance to properly compile.
Haven't ran updatepaths yet, I'm just saving my progress.

* Saving my progress again.

* Nearly finished

* Fixes

* test commit

* Revert "test commit"

This reverts commit 6e4e79a57a.

* existing base_icon_state

* base to atom

* Update twohanded.dm

* map updates and updatepaths relocation

* merge conflicts

* Fixes in local testing

* call parent

* fuck you admins have to wait procs out

* wielded stats

code/_onclick/drag_drop.dm

@@ -177,10 +177,6 @@
 /obj/item/proc/onMouseUp(object, location, params, mob)
 	return
 
-/obj/item
-	var/canMouseDown = FALSE
-	var/syndicate = FALSE // Does this item have syndicate only functionality via hud buttons? Needs to be in this scope to encompass all Chameleon items - Hopek
-
 /obj/item/gun/CanItemAutoclick(object, location, params)
 	. = automatic