Consider moving from (Hu)go module to Node module

[rootwork]

Doks loads its dependencies via Node modules and is thus installed with npm.

Purple Prism is currently using Hugo modules as that's more native to the Hugo ecosystem, but that means more steps for installation. It might be easier to just publish this as a Node module and load everything that way.

This would also allow us to set up a single project-level package.json and inherit Doks Node commands.