[DNM][DNM][WIP] Projectile backend code port and update

Ports#54924,  #65061, #59804 from /tg.
adds auxiliary code from /tg to make code work.

code/modules/hydroponics/grown/towercap.dm

@@ -151,6 +151,7 @@
 	density = FALSE
 	anchored = TRUE
 	buckle_lying = 0
+	pass_flags_self = PASSTABLE | LETPASSTHROW
 	var/burning = 0
 	var/burn_icon = "bonfire_on_fire" //for a softer more burning embers icon, use "bonfire_warm"
 	var/grill = FALSE
@@ -163,13 +164,6 @@
 	. = ..()
 	StartBurning()
 
-/obj/structure/bonfire/CanPass(atom/movable/mover, turf/target)
-	if(istype(mover) && (mover.pass_flags & PASSTABLE))
-		return TRUE
-	if(mover.throwing)
-		return TRUE
-	return ..()
-
 /obj/structure/bonfire/attackby(obj/item/W, mob/user, params)
 	if(istype(W, /obj/item/stack/rods) && !can_buckle && !grill)
 		var/obj/item/stack/rods/R = W