Add --verbose option

[Mick235711]

Adding the -v or --verbose option to make output more verbose. Cannot specify --verbose and --quiet at the same time. Specifying --verbose will pass the same option to brew update, brew cask install and brew cleanup, causing them to generate verbose output. This can be very useful in several ways, like viewing update progress, viewing downloading speed during install, and to let users see what files are being cleaned. In fact, I always use brew update -v instead of brew update because my network is not very fast and I hate seeing the command stuck at blank output. I wish brew cu can have a similar function.

[ondrejfuhrer]

Hey @Mick235711 , thank you for your contribution 👍 Looks good.