[myenergi] Initial contribution

[renescherer]

myenergi Binding

This binding supports a number of devices provided by the company myenergi. They include the Zappi car charger (EVSE), the Eddi solar diverter and the Harvi remote sensor for CT clamps.

[myenergi] Initial contribution to support Zappi, Eddi and Harvi devices

Description

Although this is the first official PR for this binding, it has been in the market place for a while for 3.x and 4.x openHAB systems and has been used, tested and extended by various contributors. This is the latest version which aligns with the standard naming conventions and works with openHAB 5.x.

Details about the binding can be found in the market place

Testing

Your pull request will automatically be built and available under the following folder:
https://openhab.jfrog.io/ui/native/libs-pullrequest-local/org/openhab/addons/bundles/

[lsiepel]

Thanks for contributing this binding. I left quite some comments, don't let it demotivate you, in general it looks good, it just are many small things to look at. I do have one slightly bigger comment burried somewhere about the seperation of concern regarding the bridge and its responsibilities. Let me know if any of my comments are unclear, it took me some time to review ;-)
When these are addressed, i can look at the remaining files (handlers + apiclient)

[renescherer]

Thanks very much @lsiepel for the detailed review. I've started work on the changes and hopefully will have a new version available sometime next week.

[renescherer]

@lsiepel I've addressed most of your suggestions above. There are few where I had some further questions and I haven't restructured the files yet, so that it's easier to trace through the initial comments.

[lsiepel]

Updated open comments and added a few.