591: Add groups to user info, with sections and using RecyclerView for future expandability

[penguin86]

Implementation of #591

Added groups and implemented sectioning in RecyclerView. Meant for adding further groups if needed in the future.
Based on the suggestions by Andy in #16767 (comment)

🖼️ Screenshots

🏚️ Before	🏡 After

🏁 Checklist

• Tests written, or not not needed

[jancborchardt]

Very nice! :)

This is probably a follow-up and should be done separately, but it would be nice to also move it to be in line with how @AndyScherzinger did it for the Talk Android app: nextcloud/talk-android#5943

[penguin86]

Hey @jancborchardt , yes I think it's the final intent: in fact, this isn't my first implementation unfortunately, at first I completely missed the big picture 🤦‍♂️ : see comment #16767 (comment) in the, now closed, original PR.

[github-actions]

Hello there,
Thank you so much for taking the time and effort to create a pull request to our Nextcloud project.

We hope that the review process is going smooth and is helpful for you. We want to ensure your pull request is reviewed to your satisfaction. If you have a moment, our community management team would very much appreciate your feedback on your experience with this PR review process.

Your feedback is valuable to us as we continuously strive to improve our community developer experience. Please take a moment to complete our short survey by clicking on the following link: https://cloud.nextcloud.com/apps/forms/s/i9Ago4EQRZ7TWxjfmeEpPkf6

Thank you for contributing to Nextcloud and we hope to hear from you soon!

(If you believe you should not receive this message, you can add yourself to the blocklist.)