Gun overlays 2: Electric boogaloo. (#38003)

* Reduces selfcharge gun processing/icon work

* More efficient gun overlays, adds old_ratio var

* oh my god it was calling the egun's update_icon?

* percent proc

* Attachment overlay overhaul

* Cut overlays in egun update

* ebow 1000% better overlay management

* Update gun.dm

* Pointless check

* Giving KA and children consistent icon behavior

* Update kinetic_accelerator.dm

* Fixed

* ..() readded

* ..() readded

* ..() readded

* Antur didnt catch this one heck

* Because confusing vars are apparently more maintainable

* Gun overlays 2: Electric boogaloo

* another one

* Chameleon guns are removed

* tentacles everywhere

code/modules/projectiles/ammunition/energy/chameleon.dm

@@ -1,15 +0,0 @@
-/obj/item/ammo_casing/energy/chameleon
-	projectile_type = /obj/item/projectile/energy/chameleon
-	e_cost = 0
-	var/hitscan_mode = FALSE
-	var/list/projectile_vars = list()
-
-/obj/item/ammo_casing/energy/chameleon/ready_proj(atom/target, mob/living/user, quiet, zone_override = "")
-	. = ..()
-	if(!BB)
-		newshot()
-	for(var/V in projectile_vars)
-		if(BB.vars.Find(V))
-			BB.vv_edit_var(V, projectile_vars[V])
-	if(hitscan_mode)
-		BB.hitscan = TRUE