Add alphabetical sorting to docs list

[virgile-dev]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.
Nextcloud users are used to be able to sort docs in alphabetical order. Right we show only sort on the update date.

Describe the solution you'd like
When I click on "name" it should order docs in alphabetical order A to Z, if I click again Z to A and again it disables the alphabetical order. If I click on "updated at" it goes back to the default order of last updated.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Discovery, Documentation, Adoption, Migration Strategy
If you can, explain how users will be able to use this and possibly write out some documentation (if applicable).
Maybe add a screenshot or design?

Do you want to work on it through a Pull Request?

[AntoLC]

We had the sorting in place, it has been voluntary removed apparently (#3d5ff93a), are we sure we want this feature rollback ?

[virgile-dev]

I guess we need @rl-83 to chime in :)