Implement the idea of "recipes"

[bnvk]

There are numerous ideas here in Conjuror that require what we're calling "recipes" which are ways to map certains types of CSV data to certain operations and then HTML templates or such.

Getting this right will be slow going and some trial and error, but this issue to focus on that. @simonv3 and I discussed the CLI having stage when running a command like conjuror project new-project-name prompts a user to "map" data in a datapackage.json schema to values in a given recipe!

[bnvk]

@simonv3 last note about this for now, it might be worthwhile to explore the idea of a "recipe" being small enough that the outputting a "master template" could consist of multiple recipes, e.g. hour tracking + expenses