added sensible medium-sized (and small) wall signs (#6627)

Resources/Textures/Structures/Wallmounts/signs.rsi/meta.json

@@ -804,6 +804,118 @@
           1
         ]
       ]
+    },
+    {
+      "name": "small_secure_red",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "small_secure",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_secure_red",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_blank",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_magnetics",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_danger",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_explosives",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_cryogenics",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_electrical",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_biohazard",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_radiation",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_flammable",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_laser",
+      "delays": [
+        [
+          1
+        ]
+      ]
+    },
+    {
+      "name": "medium_secure",
+      "delays": [
+        [
+          1
+        ]
+      ]
     }
   ]
 }