Add verbose output throughout commands

[kytrinyx]

We have a global --verbose flag, but at the moment it's not doing much.

In order to make it vastly more easy to debug stuff, I'd like to add verbose output at every step of the way throughout the download, submit, and configure commands.

To add verbose output:

• import "github.com/exercism/cli/debug"
• at each step, add debug.Printf() statements

This should also set debug output in the packages that the commands use, e.g. the api, comms, config, and workspace.

[rahul6991]

I am working on this issue #525 May i know whether it's open or not?

[nywilken]

@rahul6991 thanks for your recent comments on the brew install issue.

I would hold off on working on this issue as I am refactoring away the debug pkg. However, if you are looking to help improve the CLI experience the issue 728 would be a good one address.

[rahul6991]

@nywilken
I am working on the #525 and almost completed with the verbose, I am sure my solution will provide concurrency even if there is a refactoring in debug pkg.