Search functionality

[akabiru]

Implement search

Make suggestions based on search terms

$ hscode --search 'not found'

The response should suggest status codes that contain the specified term. e.g. 404.

[mradeybee]

@akabiru I don't know how much time I have, but I can pull this off.

[akabiru]

Sounds great @andela-aadepoju! 🎉 I'd request that you raise a WIP PR with lib work-in-progress label just so that we're able to track your progress.