Support default images if message has no attachments

[etcadinfinitum]

It would be nice to have a feature to pick an image from a local directory and fry that when the triggering message has no attachments.
It would also be nice to send both the original and the fried result in the same message, but that might require an embed response instead of the client.send_file(...) option.
Naturally, the sender will be called out for the original message having no attachments.