Resolve "Backend fixes"

server/app/__init__.py

server/app/apis/__init__.py

server/app/apis/auth.py

server/app/apis/competitions.py

server/app/apis/misc.py

server/app/apis/questions.py

server/app/apis/slides.py

server/app/apis/teams.py

server/app/apis/users.py

server/app/core/__init__.py

server/app/core/rich_schemas.py

server/app/core/schemas.py

server/app/database/__init__.py

server/app/database/base.py

server/app/database/controller/__init__.py

server/app/database/controller/add.py

server/app/database/controller/delete.py

server/app/database/controller/edit.py

server/app/database/controller/get.py

server/app/database/controller/search.py