Add custom fields for model type and custom ordering field for list query

[yefeza]

Pull Request Template

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• Documentation update
• New feature (non-breaking change which adds functionality)
• Tests update
• Feedback update

Type of code written

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• Bug fix (non-breaking change which fixes an issue)
• Functional new feature
• GUI new feature
• Documentation
• Tests

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• Don't have any dependencies that are required for this change.
• My code is self-documenting
• My code does not generate conflicts with previous versions of the code

Screenshots (if appropriate):

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Code of Conduct

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License

Django Graphbox is licensed under the MIT License.