Add WI DOT cams layer

layers/dot-cams/index.js

@@ -0,0 +1,18 @@
+import mn from './mn/layer.js';
+import wi from './wi/layer.js';
+
+const dot_cams = {
+    name: "State DOT Cameras",
+    layers: [
+        {
+            name: "MNDOT/511MN",
+            layer: mn,
+        },
+        {
+            name: "WisDOT/511WI",
+            layer: wi,
+        },
+    ],
+};
+
+export default dot_cams;