[Addition & Tweak] Arachnid sprite update and 3 new markings (#16470)

Resources/Textures/Mobs/Customization/arachnid.rsi/meta.json

@@ -1,7 +1,7 @@
 {
   "version": 1,
   "license": "CC-BY-SA-3.0",
-  "copyright": "https://github.com/PixelTheKermit",
+  "copyright": "Made by PixelTheKermit (github) for SS14",
   "size": {
     "x": 32,
     "y": 32
@@ -15,6 +15,18 @@
       "name": "sharp",
       "directions": 4
     },
+    {
+      "name": "stingers",
+      "directions": 4
+    },
+    {
+      "name": "curled",
+      "directions": 4
+    },
+    {
+      "name": "zigzag",
+      "directions": 4
+    },
     {
       "name": "web",
       "directions": 4