Move AntAlmanac's Course Enrollment Data to API

[ChaseC99]

AntAlmanac tracks course enrollment data over each registration window.

This information is stored in MongoDB. We should transfer this data over to the API so that everyone has access to it.

Reference AntAlmanac issue: icssc/AntAlmanac#182

[ramanxg]

TODO: Create an endpoint, similar in AntAlmanac, for requesting data from AntAlmanac's MongoDB instance of enrollment history.

Helpful to reference: https://github.com/icssc-projects/antalmanac-backend

[ChaseC99]

Oh shoot this reminds me, I need to start logging enrollment data for this upcoming quarter!

[ChaseC99]

Here's the enrollment data from AntAlmanac's mongo: https://drive.google.com/file/d/16Fe-wjwW7P4aistpdmINr8fDhl4ONUMP/view?usp=drivesdk

It hasn't been tracking recent quarters though. You could reach out to @Douglas-Hong to see if he has that data available from ZotTracker