Add root user initialization

app/user/root.py

@@ -0,0 +1,21 @@
+from datetime import date
+
+from app.config import config
+from app.db import session_factory
+from app.user import service as user_service
+from app.user.model import User
+
+
+def init_root_user():
+    db = session_factory()
+    root_user = user_service.get_user_by_username(db, "root")
+
+    if root_user is None:
+        user_service.create_user(db, User(
+            username="root",
+            email=config["CGNO_ROOT_EMAIL"],
+            password=config["CGNO_ROOT_PASSWORD"],
+            given_name="Root",
+            birthdate=date.today()
+        ))
+        db.close()