Hi  @jwillin ‌ - There HAS, though not specifically with quizzing but with any text box entry, in general.  Surprisingly, it has not received very many votes yet, so it could probably use a bit of love and comments:  https://community.canvaslms.com/ideas/11652-add-docviewer-tools-to-text-entry-box-submissions 

There IS the ability to create a file upload-type of question, which I imagine you already know, though I realize that could open a different can of worms:  How do I create a File Upload quiz question?