Add protected method docs to generated documentation

[wt]

Summary

Can esdoc please be made to also output docs for the protected methods (like the constructor on the Driver class)?

Steps to reproduce

1. Look at Neo4j javascript lib docs
2. Look for Driver class

Expected behavior

I expect to see the docs for the constructor.

Actual behavior

There are no docs for the constructor, presumably because it is a protected method.

Other info

FWIW, it would also be nice to get docs for the types like the MetaInfo and DriverConfig.