Feature idea: show QR code in terminal

[agazso]

The result of many operations is a very long hash or url, which can be cumbersome if you want to transfer it to an other device (e.g. mobile). It would be good to have an option to print QR codes as well.

[Cafe137]

Put this feature behind a --qr flag for the upload and feed upload commands

• In case of the upload command, it should generate a QR from the URL: http... line
• In case of the feed upload command, it should generate a QR from the Feed Manifest URL: http... line