feat(term-enrichment-similarity-from-embeddings)

The aim is to find synonyms from the most similar words in the vocabulary of the language model. At the moment there is only spacy but the idea is to add Bert later.

I didn't do a demo because I need to use a lot of data to make it work and it wouldn't be very clean to add this amount of documents to the repo. We can talk about that if you want, I have one on my local.