Adding tag support in download progress output

[MitchellBerend]

As discussed in #60 tag support is now actually possible from the start of the
process thanks to PR #61.

The max tag size can probably be passed to the formatter the same way the
max_tool_size is passed now. I can try and implement this but it might also
be a good first issue for others so they can familiarize themselves with the
code.

[chshersh]

Thanks for creating an issue! Feel free to try to implement this feature if you fell like it 🙂

I've included it in the upcoming milestone and I think it would be great to do this feature.