Documenting and fully making OTTR compatibility with Quarto

[Candace Savonen]

The main things that need some minor tweaks are the ottr-reports.
CSS cannot be customized in Quarto as of now so courses and styling can't be made OTTR like (until that is addressed with Quarto).

https://github.com/fhdsl/quarto_ottr_test

Mainly what is needed is:

1. Make https://github.com/fhdsl/quarto_ottr_test fully functioning with the ottr-report updates
2. Document how folks can use Quarto -- at this point probably a website only version --not a full course.

[Candace Savonen]

Related to #531

[Candace Savonen]

This is done!