Add mac address as connection for matter device

[MrEbbinghaus]

Proposed change

This PR adds a mac address connection for matter devices that have a mac address, so that they can be matched with existing devices in the registry.

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 #
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• The code change is tested and works locally.
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[home-assistant]

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

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Stale

[marcelveldt]

we need to guard for invalid data here as we have seen devices in the wild with malformed data in the hardwareAddress field. So my proposal is to convert this entire block into a small helper util which guards for invalid mac addresses (or the convert_mac_address util erroring)

[MrEbbinghaus]

Thanks for the review.

I'll look into it shortly.

[frenck]

I've marked this PR, as changes are requested that need to be processed.
Please un-draft it once it is ready for review again by clicking the "Ready for review" button.

Thanks! 👍

../Frenck

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