CREATE: Service Method for Bulletin (CRN -> Special Course Types ("Honors"/"Service Learning"/"Online"))

[DogeDevYT]

General Endpoint Requirements

1. Must have javadocs
2. Should be made in controller file of the specified micro service
3. Should return the return of an unimplemented function with an appropriate type, consider if the possible return parameter might be more than one
4. The function name should be logical given what you're retrieving

Specific Endpoint Requirements

1. Should take CRN as a parameter, required
2. Should return the value from a function that you make the name for to implement later, something like (GetSpecialTypeForCRN()) or something better. I would return something different for Honors, Service-learning, and Online.
3. Should be made in the controller file of the Bulletin Micro service on the dev branch

[DogeDevYT]

merged, closing