Vault Walls (alien, sandstone and rock) (#7799)

Resources/Textures/Structures/Walls/vault.rsi/meta.json

@@ -0,0 +1,20 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from tgstation at commit https://github.com/tgstation/tgstation/commit/e09101cb4be860ff02e035b18bef93a08b9c204c modified by Peptide",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "alienvault"
+    },
+    {
+      "name": "rockvault"
+    },
+    {
+      "name": "sandstonevault"
+    }
+  ]
+}