[Command] Fix specs aligment
[Command] Increase code coverage
[Specs] Increase coverage
[Helper] Improve specs coverage
[Helper] Improve specs coverage 2
[Command] Extract default options to constants
[Command] Fix for subcommands and root flags
[Rubocop] Fix some MethodLength violations
[Banner] Simplify header section
[Banner] Add subcommand to signature
[Banner] Wrap description to terminal width
[Command] Wrap description text