feat: Passwordless cross-device authentication

- Arkitektur: docs/auth/passwordless-architecture.md
- Backend: iom/quixzoom-auth-service/ (FastAPI + Redis)
- Webb: quixzoom-market-pages/se/login/ (QR-kod + polling)
- App: iom/quixzoom-app/src/features/auth/ (push + deep links)

Flöde: QR-kod → app-godkännande → webb-inloggad

landvex/node_modules/axios/lib/cancel/CanceledError.js

@@ -0,0 +1,22 @@
+'use strict';
+
+import AxiosError from '../core/AxiosError.js';
+
+class CanceledError extends AxiosError {
+  /**
+   * A `CanceledError` is an object that is thrown when an operation is canceled.
+   *
+   * @param {string=} message The message.
+   * @param {Object=} config The config.
+   * @param {Object=} request The request.
+   *
+   * @returns {CanceledError} The created error.
+   */
+  constructor(message, config, request) {
+    super(message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);
+    this.name = 'CanceledError';
+    this.__CANCEL__ = true;
+  }
+}
+
+export default CanceledError;