* Usese devices.json from "tuya-cli wizard" for device discovery, no topic config required
* Uses device discovery by default, but can manually edit devices.json to add IP address, protocol version, or change
* Creates short topic name using just "friendly name" or "id".
{"schema": true} allows the user to establish that proper communications with the tuya device can occur WITHOUT actually changing the present STATE of the device. This is the only command that will query the tuya device.
The current documentation says that you can query the tuya device over the "dps" TOPIC but from what I see the present state of the software does not force the tuya device to respond when using the "dps" TOPIC.
Since {"schema": true} is a command that forces a response from the tuya device, this command has been implemented under the "command" TOPIC. So "command" is the action and '{"schema": true}' becomes the command. The response is returned just like all other commands. I, use this command to guarantee communications has been established with the tuya device. If this "schema" command fails, tuya-mqtt will indicate the result in the openhab.log file and then I, can find out what is physically wrong with the communications. If this command fails the first time due to "socket" error and then goes through on the second attempt then I know that the error was due to TCP communications problem on initial startup. This command helps as a work-a-round for the "ERROR: socket problem"
