Merge in raven-node

[mattrobenolt]

Apparently we can combine these two projects.

[dcramer]

#323

[mattrobenolt]

Evaluating this as a separate issue since #323 was mostly about refactoring to use commonjs, etc. It's a much larger design decision to see if we can merge in raven-node into one big unified package.

/cc @benvinegar

[chadwhitacre]

I experienced confusion due to the two projects being separate: CenterForOpenScience/osf.io#6655 (comment).

[kamilogorek]

Design changed a bit, so closing this one