Bringing Our shotguns up to (TG)snuff (#11595)

* Makes Citadel shotguns match TG shotgun fire delay

* Makes Riot + Combat shotguns require two hands to fire

* also makes the 2handed change apply to double barrels and improvs.

code/modules/projectiles/guns/ballistic/revolver.dm

@@ -264,7 +264,7 @@
 	icon_state = "dshotgun"
 	item_state = "shotgun"
 	w_class = WEIGHT_CLASS_BULKY
-	weapon_weight = WEAPON_MEDIUM
+	weapon_weight = WEAPON_HEAVY
 	force = 10
 	flags_1 = CONDUCT_1
 	slot_flags = ITEM_SLOT_BACK

code/modules/projectiles/guns/ballistic/shotgun.dm

@@ -10,7 +10,7 @@
 	mag_type = /obj/item/ammo_box/magazine/internal/shot
 	casing_ejector = FALSE
 	var/recentpump = 0 // to prevent spammage
-	weapon_weight = WEAPON_MEDIUM
+	weapon_weight = WEAPON_HEAVY
 
 /obj/item/gun/ballistic/shotgun/attackby(obj/item/A, mob/user, params)
 	. = ..()
@@ -87,6 +87,7 @@
 	name = "riot shotgun"
 	desc = "A sturdy shotgun with a longer magazine and a fixed tactical stock designed for non-lethal riot control."
 	icon_state = "riotshotgun"
+	fire_delay = 7
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/riot
 	sawn_desc = "Come with me if you want to live."
 	unique_reskin = list("Tatical" = "riotshotgun",
@@ -207,7 +208,7 @@
 	name = "combat shotgun"
 	desc = "A semi automatic shotgun with tactical furniture and a six-shell capacity underneath."
 	icon_state = "cshotgun"
-	fire_delay = 3
+	fire_delay = 5
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/com
 	w_class = WEIGHT_CLASS_HUGE
 	unique_reskin = list("Tatical" = "cshotgun",