Ports the /tg/ shotgun sprites (#22539)

* ports the /tg/ shotgun sprites

* webedit fail

* i'm wario and my furniture is broken

* hopefully finally actually fix tests? maybe? my couch is broken

* update shotgun cabinet

* update shotgun cabinet MORE

* ohhhhhh my god...

Resources/Textures/Objects/Weapons/Guns/Shotguns/db_shotgun.rsi/meta.json

@@ -1,7 +1,7 @@
 {
     "version": 1,
     "license": "CC-BY-NC-4.0",
-    "copyright": "Taken from TerraGov Marine Corps at https://github.com/tgstation/TerraGov-Marine-Corps/pull/7678/commits/e7bc17b894aa4c1f882358016346c3be00236df8, https://github.com/tgstation/TerraGov-Marine-Corps/blob/master/icons/obj/items/gun.dmi, backpack sprite by Peptide, sprite modification by Jaсkal 298, backpack sling sprite edited by Boaz1111",
+    "copyright": "Taken from https://github.com/tgstation/tgstation/ at commit fb2d71495bfe81446159ef528534193d09dd8d34, bolt-open modified from icon.png by Flareguy",
     "size": {
         "x": 32,
         "y": 32
@@ -13,14 +13,6 @@
         {
             "name": "bolt-open"
         },
-        {
-            "name": "inhand-left",
-            "directions": 4
-        },
-        {
-            "name": "inhand-right",
-            "directions": 4
-        },
         {
             "name": "equipped-BACKPACK",
             "directions": 4