Implement tidymodels registration

[walkerjameschris]

Thanks for this port of EBMs to R! My team is very R focused and are interested in EBMs. However, our MLOps pipeline uses tidymodels. What are your thoughts on me implementing a tidymodels registration so that ebm would be an extension? Another good example of this is the bonsai package. In other words, this would not change the functionality of your package but it would allow us to use EBMs in tidymodels.

[bgreenwell]

Thanks @walkerjameschris! Happy to take the PR!