feat: make project in report accept wildcards for filtering

[simonsan]

Fixes #43

I also fixed two tiny clippy lints along the way in the same file.

Example:

bartib report -p maintenance::*
bartib report -p *rustic*
bartib report -p *rusti?

Would all match maintenance::rustic.

[nikolassv]

Thanks for the PR! This looks like a nice enhancement to reports. I never considered using hierarchical project names, but this makes a lot of sense.

I will merge it soon.

[nikolassv]

Thanks again for your work and you valuable input to bartib! I am sorry that it took me so long to merge your pr. Right now, I am quite busy at work, but I hope I will be able to put some more time into bartib in the near future.