HPR-addings (#4049)

# About the pull request

Adds the bipod and rail flashlight attatchment for the HPR Weapon Kit

# Explain why it's good for the game

Adds more quality of life for the marine players allowing them the use
of the gun in the complete potential being the full auto mode and a
comfortable range of vision with the flashlight




# Changelog
:cl:
add: Adds A Bipod and Rail Flashlight to the HPR kit
/:cl:

code/modules/cm_marines/equipment/guncases.dm

@@ -58,13 +58,15 @@
 /obj/item/storage/box/guncase/lmg
 	name = "\improper M41AE2 heavy pulse rifle case"
 	desc = "A gun case containing the M41AE2 heavy pulse rifle. You can get additional ammunition at requisitions."
-	storage_slots = 3
+	storage_slots = 5
 	can_hold = list(/obj/item/weapon/gun/rifle/lmg, /obj/item/ammo_magazine/rifle/lmg)
 
 /obj/item/storage/box/guncase/lmg/fill_preset_inventory()
 	new /obj/item/weapon/gun/rifle/lmg(src)
 	new /obj/item/ammo_magazine/rifle/lmg(src)
 	new /obj/item/ammo_magazine/rifle/lmg/holo_target(src)
+	new /obj/item/attachable/flashlight
+	new /obj/item/attachable/bipod
 
 //------------
 /obj/item/storage/box/guncase/m41aMK1