Add Time platform with alarm clock to Home Connect

[Diegorro98]

Breaking change

Proposed change

Add time platform and include the alarm clock entity.

Type of change

• [ ] Dependency upgrade
• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New integration (thank you!)
• [X] 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 will be keept in draft until #126143 gets merged, as some code can be refactored once merged, but it can be already reviewed as it will contain small changes.

Checklist

• [X] The code change is tested and works locally.
• [X] Local tests pass. Your PR cannot be merged unless tests pass
• [X] There is no commented out code in this PR.
• [X] I have followed the development checklist
• [X] I have followed the perfect PR recommendations
• [X] The code has been formatted using Ruff (ruff format homeassistant tests)
• [X] Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• [ ] Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• [X] The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• [X] New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• [X] For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

• [ ] I have reviewed two other open pull requests in this repository.

[home-assistant[bot]]

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

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[home-assistant[bot]]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks :+1:

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[joostlek]

Docs are missing

[Diegorro98]

Docs updated!