feat: Add support for device code grant

[SimonVanacco]

This PR adds support for device code grants, which has been available for some time in oauth2-server

Ready to be tested, I'd love to get some feedback if you think some areas could be improved !

Design considerations

• I've decided to let end-users handle the device code verification page on their own. This is to prevent having to require twig in the bundle itself and create more complexity to accommodate all use cases. An example controller has been added in the documentation
• This does not support verification_uri_complete, only verification_uri
• Logic for code approval is in DeviceCodeRepository::approveDeviceCode. I was unable to re-use the logic from oauth2-server as they fetch the code by "device_code" instead of by "user_code". Not sure if this is a mistake in the parent bundle or some use-case I don't understand, but it does not accommodate most people use-cases. I'm open to moving the logic somewhere else if you find a better place for it !
• I've added some basic tests but this is not my strong suit : please let me know if I missed something :)

[chalasr]

Thanks for the PR! Can you rebase it? Here are some comments also

[SimonVanacco]

Hi @chalasr

I'm not entirely sure I understood correctly what you wanted for the docs/device-code-grant.md improvements, but I tried my best to fit to your feedback :)

PR is rebased !

[Mika56]

Interested in this PR, but there's been no activity for a few months. Anything we can do to help?

[Renrhaf]

+1 interested as well !

[ajgarlag]

Thank you for your work here. I've managed to create a working demo. I've reviewed your code and added some suggestions.

[chalasr]

Happy to merge once Antonio's review comments are resolved.

[ajgarlag]

@SimonVanacco Friendly ping

[SimonVanacco]

Hi @ajgarlag

Thank you for the review, and sorry for the delay. The past few weeks have been a bit hectic :)

I implemented some of your requests (new configuration options, refactoring of the repository) and left comments on the ones I won't be able to do myself without some guidance : Supporting Symfony routes for the verification_uri and removing approveDeviceCode.

Let me know your thoughts on the update and I'll try to be quicker to respond now !

[chalasr]

Thanks. Supporting route names can be done in a follow-up PR, no problem. Regarding approveDeviceCode, I'll let Antonio have the final word as I have no strong opinion.

[chalasr]

@SimonVanacco can you look into last comments sometime?

[SimonVanacco]

Hi @chalasr @ajgarlag

All request changed have been implemented. My branch has been rebased and support for PHP 8.5 added as well

Sorry for the delay and messy rebase !

[ajgarlag]

@SimonVanacco Thanks for your work here. I've sent a few final suggestions.

[SimonVanacco]

@SimonVanacco Thanks for your work here. I've sent a few final suggestions.

The latest commit should address your suggestions, thank you for the thorough review !

[ajgarlag]

@SimonVanacco Great work! Could you please squash your commits?

@chalasr Would you like to do a final review?

[SimonVanacco]

Commits squashed :)

[chalasr]

Great job! Thank you @SimonVanacco 🚀