Add Reports resource

Hola,

I notice this module doesn't have support for the Workamajig [Reports API](https://support.workamajig.com/hc/en-us/articles/360022768792-API-Reports). I'm willing to add support and submit a PR, but I want to make sure this project is still active before I invest the time.

Thanks

No file or test is named in the issue. Start by reviewing the repository's existing resource entry points and the linked Workamajig Reports API documentation; done means the Node SDK exposes support for the Reports resource with behavior consistent with its other API resources.

Written by the indexing model from the issue text.