Richdata entity card support

[HamzaAnis]

PR Details

Added support for Data Entity Types which supports richer data structures within Excel

Description

Related Issue

https://github.com/qax-os/excelize/issues/1853

Motivation and Context

Able to add Entity card from excelize.

How Has This Been Tested

Wrote unit tests and did manual testing.

Types of changes

• [ ] Docs change / refactoring / dependency upgrade
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[xuri]

Thanks for your PR. This PR has a lot of code, I need some time to review.

[HamzaAnis]

Let me know if you will have any questions.