feat(user.py): add user management

src/judas_server/web/user.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+
+import flask_login
+
+
+class User(flask_login.UserMixin):
+    """Represents a user for authentication purposes."""
+
+    def __init__(self, id: str) -> None:
+        super().__init__()
+        self.id = id
+
+    def get_id(self) -> str:
+        """Return the unique identifier for the user."""
+        return self.id
+
+    def __str__(self) -> str:
+        return f"User(id={self.id})"
+
+    def __repr__(self) -> str:
+        return f"User(id={self.id})"
+
+
+def load_user(user_id):
+    if user_id == "admin":
+        return User("admin")
+    return None