Add Local Calendar ics events import on calendar creation

[raulcodes]

Proposed change

Adds an optional step to the local calendar config flow that allows users to create a calendar with events populated from an ics file.

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

Config flow visual changes:

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

Checklist

• The code change is tested and works locally.
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• Tests have been added to verify that the new code works.

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[home-assistant]

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

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[allenporter]

Awesome! Really appreciate your contributions here. WYDT about also doing url import? It can come in follow up PRs, but i thought it would be cool to extend to support that commonly requested use case also.

[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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[allenporter]

This looks fantastic, and very nice job with the testing. I have a couple minor comments.

[allenporter]

Marking as requesting changes

[allenporter]

This looks really close to being ready! Interested in making this happen? I think users would like it quite a bit.

[allenporter]

This looks like the feedback was addressed and this is ready, nice. Marking as ready for review.

[allenporter]

I checked out this PR and made some changes (that i requested below) but having trouble pushing. Edit: All good, got it working.

[allenporter]

Updated UI

The radio but can be extended to support #126862

[allenporter]

Thank you @raulcodes 👍🏼