[FEAT] Add a right-click "Save As"

[kjsc0310]

Could we add a "Save As" entry in the right-click menu? It lets users save images directly after preview. It will be much handier when users view images from chats, attachments or mails.

[bananakid]

Sounds reasonable if treated as "Copy To" so no re-encoding occures.

[cmixed]

Maybe a shrotcut "Ctrl + Shift + S " or "Ctrl + S" can be added.
(Of course, this depends on the actual implementation. Any shortcut should be thoroughly evaluated before finalizing.)