Exploration Balance Tweaks

- Removes the Pathfinder's Frontier Carbine
- Removes the Pathfinder's Binoculars
- Adds the Frontier Carbine to the Survery Vendor, for 750 points. It has improved stats over a normal Frontier Phaser
- Adds binoculars to the survey vendor for 40 points
- Adds a Frontier Rifle, adminbus only for now
- Renames some frontier phaser sprites for additional clarity
- Adds two frontier holdout phasers to the exploration weapons locker

code/game/objects/structures/crates_lockers/closets/misc_vr.dm

@@ -176,7 +176,6 @@
 		/obj/item/stack/marker_beacon/thirty,
 		/obj/item/weapon/material/knife/tacknife/survival,
 		/obj/item/weapon/material/knife/machete/deluxe,
-		/obj/item/weapon/gun/energy/locked/frontier/carbine,
 		/obj/item/clothing/accessory/holster/machete,
 		/obj/random/explorer_shield,
 		/obj/item/weapon/reagent_containers/food/snacks/liquidfood,