Add basic info for following new projects:

* bird
* turris-os
* fred-server

Example of use:

    cznicinfo find -f list knot

I also cleaned up sources as flake8 commands.

Also allow dumping raw parsed project data using

    cznicinfo show --format yaml foo

Also adjust links format.

Also update cznicinfo.yaml with more information.

The journey to tame all packaging metadata begins...