Add unban_ip service to http

[jpbede]

Proposed change

This adds a new service called unban_ip to the http component to unban previously banned IP addresses without the need of touching the YAML or restarting Home Assistant. It removes the IP address from the in-memory ban list and then writes it to the disc.

This way a user can utilize a automation to e.g. automatically remove a ban after some time.

~needs https://github.com/home-assistant/core/pull/113945~

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 fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: https://github.com/home-assistant/home-assistant.io/pull/30379

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:

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

To help with the load of incoming pull requests:

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

[home-assistant[bot]]

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

Code owner commands

Code owners of http can trigger bot actions by commenting:

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• @home-assistant unassign http Removes the current integration label and assignees on the pull request, add the integration domain after the command.
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• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the pull request.

[RoboMagus]

Was halfway through implementing a similar service myself before I found this PR. Glad to see someone with similar ideas / needs :) Hoping to see this merged!

[emontnemery]

Tests are failing, please set the PR ready for review when fixed.

[frenck]

I've marked this PR as draft, 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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