🔎 AS - Implement results listing. The "Load more results" should continue to behave like now as loading the next few results in place.

Basically we should just "move" the current logic to the new search dialog. Mockup for reference:

<img width="736" alt="Bildschirmfoto 2023-09-04 um 13 50 04" src="https://github.com/nextcloud/server/assets/62374139/87924e86-8405-4819-a954-2166cd253804">
