This PR adds fixture files for:
- KH100 (UK), hardware 1.0, firmware 1.7.5
- KE100 (UK), hardware 1.0, firmware 2.15.0
- KE110 (EU), hardware 1.0, firmware 1.4.0
The fixtures were collected from physical devices and anonymized for use
in development and testing.
The KE110 fixture is a new device model and has been added to the
appropriate fixture category.
This also improves test suite by adding TRV state simulation to allow tests pass on fixtures that report a non-heating state.
---------
Co-authored-by: Teemu Rytilahti <tpr@iki.fi>