Migrate from app.php to IBootstrap

[patschi]

• Resolves: #
• Target version: main

Summary

Migrated from app.php to IBootstrap. Tested:

1. App is loaded
2. Settings can be changed
3. Documents can be opened

My PHP might be a bit rusty and PHP as well as Nextcloud seems to be evolving quite quickly - please check the commit thoroughly and let me know about any feedback.

Fixes #353

TODO

n/a

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Documentation (manuals or wiki) has been updated or is not required

[juliusknorr]

Great, thanks a lot for your pull request and also the cleanup work on the issues. Looks good code wise but will give it a test run myself later this week.

[patschi]

Looks good code wise but will give it a test run myself later this week.

Thanks for checking so quick. I also tried to get seemingly simpler issues implemented - like OneNote support, what OOS can out-of-the-box. However the WOPI protocol and Office Online is such awful to troubleshoot, that I failed miserably after a few hours.

--
Related: nextcloud/server#32132

[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!

[joshtrichards]

Superseded by #490. Closing this out.