Isolate edsnlp entry points to prevent auto-import by spacy

[percevalw]

Description

Fixes #234

Since edsnlp 0.10.0, some of our components require optional dependencies (torch, transformers, etc). By default, pip install edsnlp does not install these, so importing one of these components (e.g., eds.transformer) will fail.

It is not an issue when building a pipeline via edsnlp.blank(...) since we only load entry points when required, so a user that does not add these components will face no issue. However, as demonstrated by #234, when using spacy.blank or spacy.load spacy will look into all spacy_factories entry point and try to load them all, and fail when encountering one of the components mentioned previously.

To solve that, we split our components between two namespaces, spacy_factories and a new edsnlp_factories namespace : now spacy will only look in the first namespace, while edsnlp will look in both.

Checklist

• [x] If this PR is a bug fix, the bug is documented in the test suite.
• [x] Changes were documented in the changelog (pending section).
• [x] If necessary, changes were made to the documentation (eg new pipeline).

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c918130) 96.58% compared to head (8134c30) 96.59%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #235 +/- ## ======================================= Coverage 96.58% 96.59% ======================================= Files 254 254 Lines 8356 8341 -15 ======================================= - Hits 8071 8057 -14 + Misses 285 284 -1 ```

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