Add "copy tag to clipboard" "copy reference to clipboard" "copy portal to this rem" to all context menus

[UMNiK]

At the moment you may copy the reference link from any reference’s context menu.

and any tag’s link from any tag’s menu.

The option to copy a portal is only accessible by shortcut or triple dots.

I’d love for all options to be present in all context menus. Everything is a rem, after all.