Create package object to handle current imports

[jdesiloniz]

There are a lot of imports needed to perform actions on the API (i.e.: Interpreters.scala). We should have a package object to handle these as type aliases, so users can just import that to get started using them.

[bilki]

Hey, @jdesiloniz is this still a thing we need to do?

[jdesiloniz]

@bilki I think we can close this, I was playing with github4s yesterday a little bit and this doesn't seem to be an issue anymore. Thanks for the notice!