Create share link directly from other apps

[tribut]

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

Often I find myself in the situation where I want to share a larger file (image, video) in a chat or mail, so I

• locate the file,
• share it to nextcloud,
• select an upload location,
• open the nextcloud app and
• locate the uploaded file,
• create a share link and
• then paste that.

It would be great if that process could be streamlined.

Describe the solution you'd like

In the "share to" dialog I would love a new additional item "Link via Nextcloud". When selected, this would automatically upload the file to a set location (maybe something like "/InstantUpload/Share to Link"), create a share link and copy it to the clipboard.

Describe alternatives you've considered

The approach in #1942 (make it easier to create a share link from the "successful upload" notification) would already be very helpful, but I don't think it is a real solution for the problem.

Instead of copying the link to the clipboard, the feature could also show a list of possible apps to share the link to. This is what samsung's stock "share to link" does, for example (see screenshot below).

Additional context

Interface for Samsung Link Sharing ("Link-Freigabe", follow the link for english screenshots). The user touches the top item in the first screenshot ("Link-Freigabe" / "Share link") and is presented with apps that they can share the link to in the second screenshot.

[nextcloud-android-bot]

GitMate.io thinks possibly related issues are #677 (Sharing multiple files to other apps), #2705 (How to copy share link), #2742 (Improve share link handling), #2935 (Improve share link handling), and #724 (Can't share files deftly to other apps).