Feature Request — Convert Database to Tortoise ORM

[lhain08]

Job Replace SQL Alchemy with Tortoise ORM

• [x] User Account Model, DB, Controller and Tests (@lhain08)
• [x] User Session Model, DB, Controller and Tests (@lhain08)
• [x] Course Model, DB, and Tests (@lhain08)
• [x] Course Prerequisite Model, DB, and Tests (@franchen28)
• [x] Course Corequisite Model, DB, and Tests (@PhoenixTamaoki)
• [x] Course Session Model, DB, and Tests (@canghiskhan)
• [x] Admin Settings Model, DB, and Tests (@Xies3)
• [x] Semester Date Range Model, DB, and Tests (@navyaa-24)
• [x] Class Info DB (@navyaa-24)
• [x] Semester Info Model, DB, and Tests (@vancouver02)
• [x] Student Course Selection Model, DB, and Tests (@YuetingLiao)
• [x] User Event Model, DB, and Controller (@hhdtc)
• [x] Event Model (@lhain08)

Wrap-up Finishing touches

• [ ] Database migrations - Set up system for migrating the database in the future (Do we need migrations from sqlalchemy to tortoise?)
• [ ] Testing - List and run through all use cases on the production server to ensure nothing is broken
• [ ] Update the old database tests in yacs.n/tests