Implement area for white papers and other digital assets

[bderfer68]

As an Agile Six strategy stakeholder, I want a place where I can direct people to find white papers, case studies, slide decks, and other digital assets so that they are easy to find.

The website may be a good place for these, but we don't want to presume the solution here.

AC:

• Digital content is easy to upload, publish, and manage.
• Digital content can be found easily by people who want to learn more about A6.
• As a digital content author, I can easily link to this content from a variety of places (Slack, email, etc)
• Design should be done per guidance from Update site design to incorporate new features (core values, news, digital assets, etc) #22