Add Ratvar (#24958)

* Create ratvar.yml

* restore balance to the universe

* scale issues

mfw nar-sie is smaller

* spawner + spawn anim

a shitty spawn anim is better than no spawn anim

* undenseify

no longer as dense as a dying neutron star

Resources/Textures/Mobs/Demons/ratvar.rsi/meta.json

@@ -0,0 +1,63 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from tgstation at https://github.com/tgstation/tgstation/blob/a28a7680cba9142ab80abc5ed480474ed0310462/icons/effects/512x512.dmi spawn animation kitbashed by MACMAN2003",
+  "size": {
+    "x": 512,
+    "y": 512
+  },
+  "states": [
+    {
+      "name": "ratvar",
+      "delays": [
+        [
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1,
+          0.1
+        ]
+      ]
+    },
+	{
+	  "name": "spawn",
+	  "delays": [
+	    [
+		  0.3,
+		  0.3,
+		  0.25,
+		  0.25,
+		  1,
+		  
+		  0.3,
+		  0.3,
+		  0.2,
+		  0.1,
+		  0.05,
+		  
+		  0.05,
+		  0.05,
+		  0.05,
+		  0.05,
+		  0.05,
+		  
+		  0.05,
+		  0.05,
+		  0.05,
+		  0.05
+		]
+	  ]
+	}
+  ]
+}