Selecting / De-Selecting in View Mode

Is your feature request related to a problem? Please describe.
Somewhat related to

• https://github.com/nextcloud/viewer/pull/15 (file context menu pull request)

• https://github.com/nextcloud/viewer/issues/7 (file actions feature request)

But less complex: When browsing through media folders, especially images, it is currently a bit complex to select media for deletion. You can preview the media, but when you want to select something for deletion (or any other batch operation), you got to go back to file list mode, and tick the respective file.

Describe the solution you'd like
It would be great if it was possible to tick the "selection" mark from the preview window to select media for batch operation (i.e. move, delete) without having to go back to the file list view.

Describe alternatives you've considered
You can preview, go back to file list and tick select, go back to preview, but thats pretty annoyin.

The issue names no files or tests. Start by locating the preview window’s selection control and the existing file-list batch-selection flow; verify that selecting and deselecting media in preview remains available for move and delete operations without returning to list view.