Replaces Xeno sprite. (#2718)

* Initial

* Adjusted the bounding box to be sensible

Resources/Textures/Mobs/Aliens/Xenos/xeno.rsi/meta.json

@@ -0,0 +1,31 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from Colonial Marines at commit https://gitlab.com/cmdevs/colonial-warfare/-/commit/f6b3c61fcbfe73a3f0f92edd5fc441ef845017e5",
+  "size": {
+    "x": 64,
+    "y": 64
+  },
+  "states": [
+    {
+      "name": "running",
+      "directions": 4
+    },
+    {
+      "name": "walking",
+      "directions": 4
+    },
+    {
+      "name": "dead",
+      "directions": 1
+    },
+    {
+      "name": "sleeping",
+      "directions": 1
+    },
+    {
+      "name": "crit",
+      "directions": 1
+    }
+  ]
+}

Resources/Textures/Mobs/Aliens/Xenos/xeno_hunter.rsi/meta.json

@@ -1,37 +0,0 @@
-{
-    "version": 1,
-    "size": {
-        "x": 64,
-        "y": 32
-    },
-    "license": "CC-BY-SA-3.0",
-    "copyright": "https://github.com/discordia-space/CEV-Eris/raw/7344da18b5e3dd0b1994a84e9c9c0774d71b93a5/icons/mob/alien.dmi",
-    "states": [
-        {
-            "name": "running",
-            "directions": 4
-        },
-        {
-            "name": "standing",
-            "directions": 4
-        },
-        {
-            "name": "crit",
-            "directions": 1
-        },
-        {
-            "name": "dead",
-            "directions": 1
-        },
-        {
-            "name": "sleeping",
-            "directions": 1,
-            "delays": [
-                [
-                    1.0,
-                    1.0
-                ]
-            ]
-        }
-    ]
-}