Autogenerate schema types to avoid copying them from entitycore

[eleftherioszisis]

Server schemas are materialized from server's open api schema and stored under entitysdk/_server_schemas.py.

StrEnum type are then indirectly exported into entitysdk.types so that we don't need to copy them each time they are added/updated in entitycore.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Flag	Coverage Δ
pytest	100.00% <100.00%> (ø)

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Files with missing lines	Coverage Δ
src/entitysdk/_server_schemas.py	100.00% <100.00%> (ø)
src/entitysdk/client.py	100.00% <100.00%> (ø)
src/entitysdk/core.py	100.00% <100.00%> (ø)
src/entitysdk/downloaders/emodel.py	100.00% <100.00%> (ø)
src/entitysdk/downloaders/ion_channel_model.py	100.00% <100.00%> (ø)
src/entitysdk/downloaders/morphology.py	100.00% <100.00%> (ø)
src/entitysdk/models/activity.py	100.00% <100.00%> (ø)
src/entitysdk/models/asset.py	100.00% <100.00%> (ø)
src/entitysdk/models/entity.py	100.00% <100.00%> (ø)
src/entitysdk/models/subject.py	100.00% <100.00%> (ø)
... and 1 more

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