Phyn Smart Water Assistant Support

[kasik96]

This adds support for Classic Phyn Smart Water Assistant with Cold and Hot Water Lines. It will not create a Switch when just PC1 is available. It supports Hot and Cold Water pressure and temperature. It will not create a Flow Sensor, classic temperature, or Pressure sensor as these are not available.

https://phyn.com/products/phyn

[Hedda]

Nice! Also need to update README.md

# homeassistant-phyn

Home Assistant custom component for interfacing with [Phyn](https://www.phyn.com) Smart Water Assistant and Kohler H2Wise+ by Phyn.

This integration currently provides the following capabilities:

Phyn Plus (PP1, PP2):
- Daily water usage (compatible with Energy dashboard)
- Average water temperature, pressure, and flow (realtime not available)
- Shutoff valve control
- Away mode control

Phyn Smart Water Assistant (PC1):
- ...
- ...

[jordanruthe]

Closing this as #24 is more up to date and will fix this