Integrate chemical ingredients mining provided by Dentica

[marekhorst]

This task is related to the integration of "text mining algorithms to extract OpenAIRE data that link chemical ingredients of food and cosmetics to allergies, irritation, cancer, and toxicity".

Once we are going to export the outcome as mesh terms we should assign an appropriate provenance to make sure the Subjects produced by this module are distinguishable from the Subjects coming from other mining module: documents classification, which also provides mesh terms.