Rename module and add init file to conform to ruff.

off_cooldown_bot/database/db.py

@@ -0,0 +1,11 @@
+"""Simple file to set up the sqlmodel connection to database."""
+
+from sqlmodel import SQLModel, create_engine
+
+from . import models  # noqa: F401 - Need this import for creating the models.
+
+url = "sqlite:///database.db"
+engine = create_engine(url)
+
+# Don't need to create all when connected to prod.
+SQLModel.metadata.create_all(engine)