Endpoint 10

[McGabriel99]

NOTE: Review and merge Endpoint-9 before merging this branch

Changes made: @app.post("/add/{classid}/{sectionid}/{professorid}/{enrollmax}/{waitmax}", status_code=status.HTTP_201_CREATED) def add_class(request: Request, classid: str, sectionid: str, professorid: int, enrollmax: int, waitmax: int):

• commented out SQLite version
• added a block of code to check if class already exists
• now adds classes to DynamoDB