Refactor Tesla wall connector config flow

[einarhauks]

Proposed change

Remove config options and simplify the config flow of the Tesla wall connector integration

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[einarhauks]

@MartinHjelmare Please review this pull request, which is still work in progress

I simplified the user config step: e529f30
...and removed the option to configure scan interval: 822a297

[MartinHjelmare]

Looks good! Thanks!

[MartinHjelmare]

Sorry, I was a bit quick with the merge. We should remove the stale strings for the options flow from strings.json too.

[einarhauks]

Sorry, I was a bit quick with the merge. We should remove the stale strings for the options flow from strings.json too.

Wow... already merged! I was looking for an option to make the pull request Draft but couldn't find it :(

I'll open a new pull request with the rest of the changes.

[einarhauks]

Sorry, I was a bit quick with the merge. We should remove the stale strings for the options flow from strings.json too.
See #60774