Fix non-reuse of the service name and allow user to specify their own name

[Xavinooo]

Proposed change

The service name assigned by this integration and stored in a file corresponds to the hostname. However, the integration does not retrieve it from the previously saved file on reload or restart.

When running Home Assistant in a Docker container without setting a fixed hostname, users must re-authenticate with the Freebox each time the container is recreated. This process requires pressing a physical button on the device to grant authorization. This PR resolves the issue.

Additionally, when adding a new Freebox, users now have the option to specify a custom name instead of using the hostname.

When adding the integration :

When validating on the device :

In the administration page of the device (first row, before, after on the second row) :

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 Freebox - Docker - AuthorizationError: Authorization timed out #86393

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
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• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• 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:

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  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
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[home-assistant]

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

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[taiQui]

I run also this on docker container and it's so annoying to press every time the button 😭
Need this

[joostlek]

Why don't you use location name?

[Xavinooo]

Why don't you use location name?

Not sure to get it... location of what ?