Move dispatcher into a subdirectory

We're expecting to have a whole bunch of types for the dispatched payloads, so pull the thing into a directory we can throw them in.

src/settings/controllers/CustomStatusController.js

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import SettingController from "./SettingController";
-import dis from "../../dispatcher";
+import dis from "../../dispatcher/dispatcher";
 
 export default class CustomStatusController extends SettingController {
     onChange(level, roomId, newValue) {