Fix inconsistency in writing output to stderr from some CLI commands, which led to inconsistent styling and use of quiet more flag

[amitlicht]

Description

Some CLI commands were using output.PrintStderr while others were using prints.PrintCliStderr, and similarly for stdout prints. This led to inconsistency in styling as well as in handling the quiet mode flag.

This PR standardizes all CLI commands to use the prints pkg, and eliminate the old-style printing.

Testing

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR and in github.com/otterize/docs