Taxonerd

Fix 12

- New models fine-tuned on weakly-supervised data
- Add support for new models in CLI

- Retrains the models with spacy 3.4.x to be compatible with the latest spacy version
- Retrains the models as full spaCy pipelines with additional NLP components from scispacy (tagger, parser...)
- NLP components can be excluded when loading the model

Fix 7
Fix 8

Code refactoring to expose the [Doc](https://spacy.io/api/doc) object produced by spaCy.
Only available when taxonerd is used as a python module.

python
>>> from taxonerd import TaxoNERD
>>> ner = TaxoNERD(model="en_ner_eco_md", prefer_gpu=False, with_abbrev=False)
>>> doc = ner.ner("Brown bears (Ursus arctos), which are widely distributed throughout the northern hemisphere, are recognised as opportunistic omnivore")
>>> print([ent for ent in doc.ents])
[Ursus arctos]