Add IN Carta test data from Colas Lab

[d33bs]

Description

This PR adds test data provided from the Colas Lab to help integrate IN Carta as part of #136 . It is a first step towards building tests, but this PR itself doesn't involve testing and instead only data.

Thanks in advance for any thoughts and feedback you may have!

What is the nature of your change?

• Bug fix (fixes an issue).
• Enhancement (adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• This change requires a documentation update.

Checklist

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• I have read the CONTRIBUTING.md guidelines.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• New and existing unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have deleted all non-relevant text in this pull request template.

[gwaybio]

A couple relatively minor comments - overall looks great, glad to see it!

[d33bs]

Thank you @gwaybio for the review! Merging this in after changes.