MINOR: ref(data-quality): modularized test case validator import

[sushi30]

Modularizing test case importer so it can be overridden in Collate.

• removed test_suite_factory
• implemented TestCaseImporter
• removed SQAValidatorBuilder and PandasValidatorBuilder in favor of a SourceType enum
• removed the orm table creation from test suite source

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I worked on ... because ...

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Type of change:

• [ ] Bug fix
• [ ] Improvement
• [ ] New feature
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation

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Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] My PR title is Fixes <issue-number>: <short explanation>
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[github-actions[bot]]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR. You can also use pre-commit to automate the Python code formatting.

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[github-actions[bot]]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR. You can also use pre-commit to automate the Python code formatting.

You can install the pre-commit hooks with make install_test precommit_install.

[github-actions[bot]]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR. You can also use pre-commit to automate the Python code formatting.

You can install the pre-commit hooks with make install_test precommit_install.