Bugfix: fix gussian copula segmentfault error

[MooooCat]

Description

Motivation and Context

How has this been tested?

Types of changes

• [ ] Maintenance (no change in code, maintain the project's CI, docs, etc.)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.

[sweep-ai[bot]]

Sweep: PR Review

Authors of pull request: @MooooCat, @pre-commit-ci[bot]

sdgx/models/statistics/single_table/base.py

Renamed the class SynthesizerModel to StatisitcSynthesizerModel to reflect a more descriptive class name.

Sweep Found These Issues

• The class name StatisitcSynthesizerModel contains a typo and should be corrected to StatisticSynthesizerModel.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/sdgx%2Fmodels%2Fstatistics%2Fsingle_table%2Fbase.py#L12 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-bc21248690a57473ccf8d2a81b17dd9a75174af4eb10085dd10ea6a8ae455fa7R12)

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sdgx/models/statistics/single_table/copula.py

Updated the fit method to use Metadata and DataLoader, changed the base class to StatisitcSynthesizerModel, and modified the column validation process.

Sweep Found These Issues

• The fit method now requires metadata and dataloader arguments, which could cause issues if these are not provided or are incorrectly formatted.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/sdgx%2Fmodels%2Fstatistics%2Fsingle_table%2Fcopula.py#L133-L172 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-8e189898fff802d8811a04155e8183502588ff88a643598c7f5c0c437487478fR133-R172)
• The fit method now depends on DataLoader and Metadata objects, which could introduce bugs if these objects are not correctly instantiated or if their methods do not behave as expected.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/sdgx%2Fmodels%2Fstatistics%2Fsingle_table%2Fcopula.py#L133-L172 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-8e189898fff802d8811a04155e8183502588ff88a643598c7f5c0c437487478fR133-R172)

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sdgx/synthesizer.py

Added support for StatisitcSynthesizerModel in the Synthesizer class and removed the unpacking of model_fit_kwargs in the fit method.

Sweep Found These Issues

• The removal of model_fit_kwargs in the fit method call could omit important parameters that influence the model fitting process.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/sdgx%2Fsynthesizer.py#L307-L311 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-4986c21b4838a07a79f5aa48e24519b2330512c810ed7d32e7e96900c370ec11R307-R311)

Potential Issues

Sweep isn't 100% sure if the following are issues or not but they may be worth taking a look at.

• The removal of **(model_fit_kwargs or {}) in the fit method could omit important parameters that influence the model fitting process, potentially leading to unexpected behavior or reduced functionality.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/sdgx%2Fsynthesizer.py#L311 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-4986c21b4838a07a79f5aa48e24519b2330512c810ed7d32e7e96900c370ec11R311)

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tests/models/test_copula.py

Updated the test_gaussian_copula function to use new metadata and data loader fixtures, and refactored the GaussianCopulaSynthesizer instantiation and fit method calls accordingly.

Potential Issues

Sweep isn't 100% sure if the following are issues or not but they may be worth taking a look at.

• The discrete_cols assignment to model.discrete_cols is incorrect as discrete_cols is a generator and not directly accessible.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/tests%2Fmodels%2Ftest_copula.py#L23 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-bc8922767c08a1cebdf02e21a31b74911fbca2d26db9053be00ac0581889112dR23)
• The discrete_cols assignment to model.discrete_cols is incorrect as discrete_cols is a generator and not directly accessible.
https://github.com/hitsz-ids/synthetic-data-generator/blob/2491498cc7696ae6cb78356a18fc39d7fd9d771a/tests%2Fmodels%2Ftest_copula.py#L23 [View Diff](https://github.com/hitsz-ids/synthetic-data-generator/pull/180/files#diff-bc8922767c08a1cebdf02e21a31b74911fbca2d26db9053be00ac0581889112dR23)

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[iokk3732]

fix done