[WIP] Add `dico lemmatize` subcommand

Description

The purpose of this merge request is to implement the dico lemmatize subcommand.

More precisely, it allows the user to add the tokens to the definition of a word. The json input file is a minimal json and the result is a lemmatized format json file. The subcommand uses SpaCy to tokenize the text definition into words, punctuation and so on, and then to get the lemma of the words.

Example

bind/dico -i sample/json/small_minimal.json -o file.json --library spacy --model en_core_web_sm

Checklist TODO

• Read file arguments
• Documentation for the functions
• Update Readme
• Change branch and subcommand name
• Create array of tokens of the definitions
• Add tests
• Using Spacy , get lemma of the words
• Import Spacy library
• Add argument for --library (or other keyword), which would allow to choose a library. For now it would be by default spacy only, but possibly we could add others: stanza, spacy-stanza, ...
• Add argument --model, which would allow to specify exactly the model to use. For now, it could be en_core_web_sm by default, which is small and fast for development, there are others that we will want to try, with more precise language models, eg: en_core_web_trf, etc. ...