Add Pagination to File/Folder Listing API

[DenizAltunkapan]

Enhance the file/folder listing API to support pagination.
Query params: page, size, optional sort
Response includes content, totalElements, totalPages, pageNumber

[hamadiddi]

@DenizAltunkapan can you assign me this task?

[DenizAltunkapan]

@hamadiddi done

[DenizAltunkapan]

@hamadiddi still working on it ?