Add tether gun (#16430)

Resources/Textures/Objects/Weapons/Guns/Launchers/tether_gun.rsi/meta.json

@@ -0,0 +1,33 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Sprited by discord Kheprep#7153",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "base"
+        },
+        {
+            "name": "base-unshaded"
+        },
+        {
+            "name": "inhand-left",
+            "directions": 4
+        },
+        {
+            "name": "inhand-right",
+            "directions": 4
+        },
+        {
+            "name": "inhand-left-unshaded",
+            "directions": 4
+        },
+        {
+            "name": "inhand-right-unshaded",
+            "directions": 4
+        }
+    ]
+}