[request] Support “Save to Nextcloud” direct action for WebKit applications

Thanks for continued work on this project !

The lack of direct saving to Nextcloud is the most-missed feature I have after moving from Dropbox. It would be wonderful if Nextcloud supported this interface directly for all WebKit applications but specifically Safari. Currently I have to scroll through all available target apps then select "More..." then select Nextcloud in order to save to Nextcloud, which is quite tedious, especially for saving many files (although iOS often bumps Nextcloud into the direct-apps so you don't have to click "More..." but the randomness of this is even more frustrating). For users with fewer apps installed I doubt this is as big of an issue.

As an example, observe how Dropbox is presented here from the Safari Actions menu while Nextcloud does not:

The screen presented after clicking "Edit actions..." in the above interface:

Thanks !

-=dave

Start by reviewing the iOS app's integration with Safari and the Actions menu, using the screenshots and the described Dropbox behavior as the expected reference. The issue names no files, tests, or implementation entry point; done means Nextcloud appears as a direct save action for supported WebKit applications, especially Safari.