Convert simple_select_one and simple_select_one_onecol to async (#8162)

changelog.d/8162.misc

synapse/storage/database.py

synapse/storage/databases/main/devices.py

synapse/storage/databases/main/directory.py

synapse/storage/databases/main/e2e_room_keys.py

synapse/storage/databases/main/events_worker.py

synapse/storage/databases/main/group_server.py

synapse/storage/databases/main/media_repository.py

synapse/storage/databases/main/monthly_active_users.py

synapse/storage/databases/main/profile.py

synapse/storage/databases/main/receipts.py

synapse/storage/databases/main/registration.py

synapse/storage/databases/main/rejections.py

synapse/storage/databases/main/room.py

synapse/storage/databases/main/state.py

synapse/storage/databases/main/stats.py

synapse/storage/databases/main/user_directory.py

tests/handlers/test_profile.py

tests/handlers/test_typing.py

tests/module_api/test_api.py