Replace config actions with Thing actions

[florian-h05]

With UI support for Thing actions in openHAB 4.3, I would like to get rid of the config actions, which have a high code complexity in the UI and as the issues with Z-Wave's config actions have shown, are prone to bugs.
Bindings should implement Thing actions instead of using this hacky approach-

The following search query gives an overview of the remaining config actions:
https://github.com/search?q=org%3Aopenhab+name%3D%22actions%22+language%3AXML&type=code&l=XML

Affected bindings are:

• Konnected
• Max
• MQTT HomeAssistant
• Z-Wave

Pinging @openhab/add-ons-maintainers and @openhab/z-wave-maintainers, as well as @ccutrer for MQTT HomeAssistant.

[ccutrer]

:nod:. For Home Assistant, it's the Update component. I've been meaning to figure out Thing actions anyway so I can add the Siren component, which doesn't clearly map to any channel since it almost always take additional parameters to the "trigger" action.