Modularize types checks

[gcroci2]

We can first evaluate and try pydantic package for this, which has a dataclasses module.

If it doesn't work well enough for use, we can anyway make the checks a bit more modular as per #64 (comment).

In another project, decorators have been used to check on objects' types (see this PR). See alsoScoringMethod, that is used as an Enum children to check on the validity of a variable (name). Finally, consider also adding properties (decorator) and __getitem__ method to the Task class.

[gcroci2]

We've decided to implement the functionalities originally planned for the annubes package within the NeuroGym package instead, which represents the current state-of-the-art.