Verbose flag

[codecat]

Add a verbose flag which controls whether to show filenames while compiling or not. When we're not being verbose, we could potentially display a progress spinner as well!

[codecat]

I've added a --verbose flag with 970ccdb which lets us see the actual compiler commands that are being run. Not exactly what I had in mind, but perhaps something can still change here, for example the flag I already committed could be renamed to --verbose-compiler.

[codecat]

Another option is not to expose this new flag to command line options and only have it in configuration files. This will still allow us to debug qb itself while keeping the command line flags clean.