UI: Paging support for fetchers

[JoHaHu]

Update 2023-04-24: UI is the focus; the migration is a separate task

So far only a predetermined number of search results are shown. I would like support for pagination.
For this we have to do the following:

• The GUI has to be adapted. See below at UI: Paging support for fetchers #5507 (comment) for a full description.
• Introduce an interface for paginated fetchers
• Migrating the implementation of fetchers (also possible step-by-step)

If there were no concerns, I would take a look.

[matthiasgeiger]

👍

A lot of users would appreciate that!

However, it should be configurable by fetcher as not all fetchers allow it technically, or we have other constraints like banning if to much requests are created in short time.

[Siedlerchr]

Refs JabRef#347

[koppor]

The epic behind is "JabRef for Literature Surveys". I described another step at JabRef#369.

Finally, it would be great if JabRef offered "repeatable literature survey". Meaning: JabRef stores the search properties (queries, sort order, what was excluded, ...) in a JSON file. A reviewer can open the JSON file in JabRef an click on "repeat". Then, the search is repeated from the machine of the reviewer. The reviewer kann then check for differences.

[koppor]

First implementation is crafted at #6236. However, the UI is missing. We close the pull request until someone steps in and adds a UI.

[koppor]

Still some fetchers left to implement pagination. UI has to be developed.