New debug action, PID sensor

Release notes

• This release introduces a new Home Assistant action/service, thermia.debug that, when run, will fetch debug data from your Thermia heat pump and put it in a thermia_debug.txt file located in the root of your config directory. From now on, the contents of this file should always be attached to a GitHub issue, as it will help debug problems and add support for additional features that may be supported only by your heat pump.
• The release also adds a PID sensor for heat pumps that support it.

What's Changed

• Update ThermiaOnlineAPI version to 6.3.1 by @klejejs in #104
• Code and workflow improvements by @klejejs in #105
• Add action for generating debug files by @klejejs in #106
• Add PID sensor by @klejejs in #108
• Add type improvements, lint fixes by @klejejs in #109

Full Changelog: 5.2.0...5.3.0