Gun QOL & Immersion, Uplink rebalance (#781)

* gun content

* always

* bolt datums

* fix wrong sounds

* this sounds better tbh

* fix

* rename ammo

* fix sniper rifle ammo name

* removes original content

* de-underscore

* energy sword sparks

* outfits

* update desc

* CALIBER_SHOTGUN > CALIBER_12GAUGE

_maps/RandomRuins/SpaceRuins/caravanambush.dmm

@@ -383,7 +383,7 @@
 "gt" = (
 /obj/effect/turf_decal/bot_white,
 /obj/structure/closet/crate/secure/weapon,
-/obj/item/gun/ballistic/revolver/grenadelauncher/unrestricted,
+/obj/item/gun/ballistic/revolver/grenadelauncher,
 /turf/open/floor/iron/dark/airless,
 /area/shuttle/caravan/freighter3)
 "gv" = (