Is your feature request related to a problem? Please describe. When sharing files from other apps into siskin, only 1:1 chats can be chosen as recipients, not group chats. Currently, it seems to be impossible to share files to group chats from other apps without saving them first, then opening the group chat and manually sharing the file.

Describe the solution you'd like It would be desirable to be able to choose any chat from the chat list as recipients for the shared file.

I'm happy to help with testing an implementation via TestFlight.