Plugwise

- test_diagnostics.py: line up with Core.
- Link to [plugwise v0.32.2](https://github.com/plugwise/python-plugwise/releases/tag/v0.32.2)
- Correct the DeviceInfo import for Core 2023.9.0

- Link to [plugwise v0.32.1](https://github.com/plugwise/python-plugwise/releases/tag/v0.32.1)
- Remove python3.9 compatibility: remove/replace all python3.9 references.
- Implement Ruff sorting fixes - tnx CoMPaTech for achieving the line-up with the Core Plugwise code.
- Update p1v4_442_triple testfixture, adding a Plugwise notification for the Smile P1. Add a related testcase.
- Fix logging, line up for all platforms.
- More lining up with Core Plugwise, quality improvements.
- Test both versus coredev- and coremaster-branches.

- Line up with the latest Core Plugwise code.

- New Feature: add a temperature_offset Number for devices that support this function, via [plugwise v0.32.0](https://github.com/plugwise/python-plugwise/releases/tag/v0.32.0)
- Correct the unit_of_measurement for the temperature_difference sensor.

- Update backend-library to v0.31.3: fix midnight rollover, by dirixmjm

- Update backend-library to v0.31.2:
- Fix building (remaining plugwise instead of plugwise_usb).
- Fix sequence_id counter skew, provided by dirixmjm.
- Fix stuck energy_consumption_today, provided by dirixmjm.