Linux File Browser Intergration - Coping internal links, view file in browser, share etc

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## Feature request

**Which Nextcloud Version are you currently using:** Server v29.0.8 Client v3.14.1 (flatpak) on ProjectBlueFin

**Is your feature request related to a problem? Please describe.**
In Linux you can't easily copy internal link to a file or create a shared public link. Rather than being able to right click on the file you want to copy a link to (E.g. to email someone that link) you have to open web browser, log in, find the file and then share the link.

**Describe the solution you'd like**
On MacOS (and I believe Windows) there is a finder integration for nextcloud that puts synced ticks or exclamation marks for sync errors next to each file, and there is a right click menu that allow you to copy internal link and public share link etc.

**Describe alternatives you've considered**
Even just implementing the 'show this file in web-browser' option would make it much easier to share a link to a file.