Add support for font coloring

[mthomas-ketchbrook]

Occasionally we apply font coloring to some of the text (e.g., "High Risk" is in red font, "Low Risk" is in green font, etc.) in our PDF reports.

Previously, this was done through the use of the \textcolor{} LaTeX function, in combination with the (scripted) installation of a LaTeX package (in the assets/ directory) that enables font colors to be available.

I would like to try to enable this with the Typst approach, as well, but I'm not sure how to do so. If we determine a solution, this should be added to the example report .qmd file.