Add Latex to handle math equation.

[bit-spite]

Description

We're adding LaTeX to the project for math equations. Because LaTeX renders as a view, we'll split the text, handling the math parts ($$) with LaTeX, and the rest with attributed strings so Markdown still works.

Checklist

Please ensure the following items are complete before submitting a pull request:

• My code follows the code style of the project.
• I have updated the documentation (if applicable).
• I have added tests to cover my changes.

Type of Change

Please check the relevant option below:

• Bug fix (non-breaking change which fixes an issue)
• Documentation update (non-breaking change which updates documentation)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Screenshots

Additional Notes

Add any additional information or context about the pull request here.

[schmidt-sebastian]

This looks good. Can you resolve the merge conflicts now that the other PRs are merged?