[Feature] Add function to generate and copy image bed links

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request.

• Yes

The feature

The problem

The current share function in Immich cannot get the raw direct link of the image. The shared link is not the true file URL, and copying it is inconvenient. This prevents Immich from being used as a self-hosted image bed.

The solution you'd like
Add a function to generate and copy the raw direct link of the selected image. One-click to copy the real image file URL to clipboard.

Alternatives you've considered
I have to manually extract the raw image URL from the shared page, which involves many cumbersome steps.

Additional context

The raw image link can be pasted directly into Markdown, forums and other places to display images.

Platform

• Server
• Web
• Mobile