Rename database_setup directory to database.

database/database_test.py

@@ -0,0 +1,18 @@
+from sqlmodel import Session, SQLModel, create_engine
+
+from database.models import CategoryGroup, Guild
+
+url = "sqlite:///database.db"
+engine = create_engine(url)
+SQLModel.metadata.create_all(engine)
+
+with Session(engine) as session:
+    guild = Guild(id=1, name="test guild", submission_channel=1, verification_channel=2)
+    session.add(guild)
+
+    group1 = CategoryGroup(name="group1", channel_id=1, guild_id=1, message_id=1)
+    group2 = CategoryGroup(name="group2", channel_id=2, guild_id=1, message_id=2)
+    session.add(group1)
+    session.add(group2)
+
+    session.commit()