Add readable state for tesla wall connector

[piitaya]

Proposed change

Adds new state sensor with translated state. The old state sensor which contained the raw data (a number) has been renamed to status_code and disabled by default.

I looked at tesla wall connector third party app for state mapping (https://apps.apple.com/us/app/wall-monitor-for-tesla/id1635414689) and tested with my device.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

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[home-assistant]

Hey there @einarhauks, mind taking a look at this pull request as it has been labeled with an integration (tesla_wall_connector) you are listed as a code owner for? Thanks!

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[jpbede]

Should we mark this as a breaking change as someone may already be using the old sensor in their automations? Or has the sensor not yet been released?

[piitaya]

The entity ID of the old sensor will not change because it's already created. And it will be only disabled for new integration setups.

[jpbede]

Looks good, thanks 👍

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[frenck]

Thanks, @piitaya 👍

../Frenck