Add support for importing paprika recipe format

[sudo-nano]

Paprika recipe format is a zip file of individually zipped JSONs, according to their website. Parsing this format is not too difficult, the hard part is matching to ingredients in the dataset. In cases where ingredients in the paprika file do not match ingredients that already exist in the dataset, the process should interactively ask whether the user wants to map it to a different existing ingredient or create a new one. This may require adding aliases as an ingredient property.