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/formidable/dist/parsers/JSON.cjs

@@ -0,0 +1,35 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var node_stream = require('node:stream');
+
+/* eslint-disable no-underscore-dangle */
+
+
+class JSONParser extends node_stream.Transform {
+  constructor(options = {}) {
+    super({ readableObjectMode: true });
+    this.chunks = [];
+    this.globalOptions = { ...options };
+  }
+
+  _transform(chunk, encoding, callback) {
+    this.chunks.push(String(chunk)); // todo consider using a string decoder
+    callback();
+  }
+
+  _flush(callback) {
+    try {
+      const fields = JSON.parse(this.chunks.join(''));
+      this.push(fields);
+    } catch (e) {
+      callback(e);
+      return;
+    }
+    this.chunks = null;
+    callback();
+  }
+}
+
+exports.default = JSONParser;