Added Object Modification API

api_specification.md

src/api/authentication.py

src/api/database/database.py

src/api/miscellaneous/__init__.py

src/api/miscellaneous/errors.py

src/api/objects/__init__.py

src/api/objects/object.py

src/api/objects/type.py

src/api/objects/types.py

src/api/routes/__init__.py

src/api/routes/courses.py

src/api/routes/object_modifications.py

src/api/routes/site.py