created user settings in the settings page

py_app/app/models.py

@@ -0,0 +1,10 @@
+from . import db
+
+class User(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(80), unique=True, nullable=False)
+    password = db.Column(db.String(120), nullable=False)
+    role = db.Column(db.String(20), nullable=False)  # Role: superadmin, administrator, quality, warehouse, scan
+
+    def __repr__(self):
+        return f'<User {self.username}>'