Adds more in hand sprites for certain items (#3392)

Adds a lot of more in hands and back sprites, wielded shotgun sprites, guns, bags and things like mining satchels and bee nets.

code/modules/projectiles/guns/energy/special.dm

@@ -512,6 +512,7 @@
 	name = "tesla gun"
 	desc = "A gun that shoots a projectile that bounces from living thing to living thing. Keep your distance from whatever you are shooting at."
 	icon_state = "tesla"
+	item_state = "tesla"
 	icon = 'icons/obj/gun.dmi'
 	charge_meter = 0
 	w_class = 4
@@ -529,6 +530,7 @@
 	name = "gravity gun"
 	desc = "This nifty gun disables the gravity in the area you shoot at. Use with caution."
 	icon_state = "gravity_gun"
+	item_state = "gravity_gun"
 	icon = 'icons/obj/gun.dmi'
 	charge_meter = 0
 	w_class = 4

code/modules/projectiles/guns/projectile/automatic.dm

@@ -305,7 +305,7 @@
 	name = "railgun"
 	desc = "An advanced rifle that magnetically propels hyperdense rods at breakneck speeds to devastating effect."
 	icon_state = "railgun"
-	item_state = "arifle"
+	item_state = "railgun"
 	w_class = 4
 	force = 10
 	caliber = "trod"

code/modules/projectiles/guns/projectile/boltaction.dm

@@ -73,7 +73,7 @@
 			w_class = 3
 			recoil = 2
 			accuracy = -2
-			item_state = "gun"
+			item_state = "obrez"
 			slot_flags &= ~SLOT_BACK
 			slot_flags |= (SLOT_BELT|SLOT_HOLSTER)
 			name = "\improper obrez"
@@ -86,7 +86,7 @@
 	name = "obrez"
 	desc = "A shortened bolt action rifle, not really accurate. Uses 7.62mm rounds."
 	icon_state = "obrez"
-	item_state = "gun"
+	item_state = "obrez"
 	w_class = 3
 	recoil = 2
 	accuracy = -2

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

@@ -60,6 +60,14 @@
 
 	update_icon()
 
+/obj/item/weapon/gun/projectile/shotgun/pump/update_icon()
+	..()
+	if(wielded)
+		item_state = "[icon_state]-wielded"
+	else
+		item_state = "[icon_state]"
+	update_held_icon()
+
 /obj/item/weapon/gun/projectile/shotgun/pump/combat
 	name = "combat shotgun"
 	desc = "Built for close quarters combat, the Hephaestus Industries KS-40 is widely regarded as a weapon of choice for repelling boarders."