DDF for Xiaomi Aqara Smart Curtain Controller

[ebaauw]

This is the original mains-powered lumi.curtain from around 2017.

The DDF is pretty straightforward, but note:

• state.on and state.bri are no longer exposed. These have been deprecated for Window Covering devices since 2020/04/08, so over three years now.
• No bindings, but the device reports Current Position Lift Percentage to the coordinator out-of-the-box.
• The device doesn't support DW Build ID, so swversion is based on Date Code.
• The device also reports the current position as Present Value on the Analog Output (Basic) cluster. The legacy C++ code also considers this, but the DDF currently ignores it. I don't think I've ever seen a report from Analog Output without one on Window Covering.
• The device supports a Reversed configuration setting, but this is currently not exposed, as the corresponding resource item (config/reversed?) hasn't been defined yet.
• And, last but not least, state.lift reports % closed, as per ZCL spec. So 0 is fully open (in which case state.open is true, and 100 is fully closed. The device reports % open instead.