Support for Ventus W266 weather station

**Describe the problem you have/What new integration you would like**
Support for Ventus W266 weather station

**Please describe your use case for this integration and alternatives you've tried:**

There's a cheap weather station and documentation how to get a couple of wires soldered to it so it works with easyESP firmware. It can report all the parameters together with lightning strikes detection.

Modification description:
https://www.letscontrolit.com/wiki/index.php?title=VentusW266

The code that decodes the frames sent to the display is here:
https://github.com/letscontrolit/ESPEasy/blob/mega/src/_P046_VentusW266.ino

Just wondering how hard it would be to port this to esphome.

**Additional context**

Read the Ventus W266 modification notes and ESPEasy's src/_P046_VentusW266.ino decoder first. Then identify the corresponding ESPHome integration entry point and define completion as supporting the station's reported parameters and lightning-strike detection. Validate the result against the frame information described by those references.

Written by the indexing model from the issue text.