Issue - 413 Support for wildcard in paths options

[rishijain]

Check list:

• Add an entry to the changelog
• Squash all commits into a single one
• Describe your PR, link issues, etc.

Description:

This PR adds support for passing **(wildcard) paths to the .rubycritic.yml file. So now someone can do something like:

paths:
  - app
  - packs/*/app

This was requested here.

The way I have implemented is to basically find all the valid directories that the ** expands to, so for example:
if user passes packs/*/app and in the app, packs has 3 sub-directories in it but only 2 of them has app inside those sub-directories, I am resetting the options[:paths] to ['app', 'packs/pack1/app', 'packs/pack2/app' ].

[etagwerker]

@rishijain This looks good, thanks!

Could you please add a note to the README to make sure people understand there is now support for wildcards in paths? Also, could you please add one or two test cases to test this new behavior?

Thank you! ❤️