feat(all): add filter on model and devices

Close #1

node-red-contrib-xiaomi-switch/xiaomi-switch.js

@@ -1,6 +1,7 @@
 const miDevicesUtils = require('../src/utils');
 
 module.exports = (RED) => {
+    // switch, sensor_switch.aq2
     function XiaomiSwitchNode(config) {
         miDevicesUtils.defaultNode(RED, config, this);
     }