[Announce] Tuya cloud access (node-red Tuya OpenAPI V2.0)

This node-red flow implements experimental access to Tuya Cloud API to get data or perform instructions programmatically, without using the 'SmartLife' App or the 'Tuya Development Platform'.

The nr_Tuya_OpenAPI_2.0 flow is a minimal implementation, for testing and API exploration, essentially an examples collection.

The use of OpenAPI could help in some tedious manual steps still required, such as identifying the DPs of a new device.

See the full documentation.