add cli option to (de)compress quietly

[a-moreira]

closes #294

[marcospb19]

quoted from #294 (comment)

I wasn't sure if I should send the args.quiet from the main function down the code, like it's done with the question policty and file visibility or not. Let me know what you think pls

I think it's ok to have the argument being passed like this, eventually we'll refactor if it's a problem.

I want to do some local testing here before merging, so I'll be giving another review when possible.

[marcospb19]

I tested it and everything seems to be OK, just a problem with the flag not being global.

ouch --quiet compress ... # This always works
ouch compress --quiet ... # This only works with 'global = true'
ouch compress ... --quiet # This only works with 'global = true'

I'll fix this for --quiet and other flags too, but in another PR.

[marcospb19]

Thanks for the PR! 🎉 🎉 🎉