Complex report content type

### As a staff member of the Office of Police Oversight, I want to be able to create an annual report with rich media and complex information (such as data visualizations), so that I can meet public expectations and report out on what we've done.

**Is your feature request related to a problem? Please describe.**
The need for annual reports emerged from our microsite research, as well as directly from the Office of Police Oversight, who approached us about this. A complex report content type might serve other CoA needs as well.

**Describe the solution you'd like**
*A clear and concise description of what you want to happen.*

**Describe alternatives you've considered**
*A clear and concise description of any alternative solutions or features you've considered.*

**Additional context**
Microsite research:
- [Final presentation](https://docs.google.com/presentation/d/1YYubvvJGXMoWgUuO7_6ACQIpnZUH6IY6-jNe3GDJVfg/edit?usp=sharing)
- [Microresearch overview](https://docs.google.com/document/d/1hi8VYR0sB1Of-CdVAMfFemh0pHtONjCVaxls-IGk7sk/edit?usp=sharing)

[Office of Police Oversight kickoff deck](https://docs.google.com/presentation/d/1932LnDzzURQsU9OR2vTXrpee04KFQhwcZ4eQxAsT8Vo/edit?usp=sharing)