add methods for url_suffix and version

[lbendavid-cloudinary]

Pull request for @cloudinary/url-gen

What does this PR solve?

Add 2 missing methods for code generation

Final checklist

• [ ] Implementation is aligned to Spec.
• [ ] Tests - Add proper tests to the added code.

[lbendavid-cloudinary]

It is being used by other project in order convert a url structure into code snippet