add data template

data/homie/config.json

@@ -0,0 +1,17 @@
+{
+"name": "device name",
+"device_id": "deviceid",
+"wifi": {
+"ssid": "wifissid",
+"password": "password"
+},
+"mqtt": {
+"host": "10.0.0.1",
+"port": 1883,
+"auth": false,
+"base_topic": ""
+},
+"ota": {
+"enabled": false
+}
+}