Timed mouse spawners (#7831)

Resources/Textures/Markers/cross.rsi/meta.json

@@ -1,7 +1,7 @@
 {
   "version": 1,
   "license": "CC-BY-SA-3.0",
-  "copyright": "Taken from https://github.com/vgstation-coders/vgstation13/blob/e71d6c4fba5a51f99b81c295dcaec4fc2f58fb19/icons/mob/screen1.dmi",
+  "copyright": "Taken from https://github.com/vgstation-coders/vgstation13/blob/e71d6c4fba5a51f99b81c295dcaec4fc2f58fb19/icons/mob/screen1.dmi - modified to add 'timed'",
   "size": {
     "x": 32,
     "y": 32
@@ -21,6 +21,9 @@
     },
     {
       "name": "red"
+    },
+    {
+      "name": "timed"
     }
   ]
 }