refactor(radio): separate directory and playback components

package.json

@@ -155,6 +155,7 @@
     "./layers/awareness": "./src/layers/awareness/index.js",
     "./layers/traffic": "./src/layers/traffic/index.js",
     "./layers/bikeshare": "./src/layers/bikeshare/index.js",
-    "./layers/cctv": "./src/layers/cctv/index.js"
+    "./layers/cctv": "./src/layers/cctv/index.js",
+    "./layers/radio": "./src/layers/radio/index.js"
   }
 }