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/date-fns/esm/_lib/setUTCWeek/index.js

@@ -0,0 +1,14 @@
+import toInteger from "../toInteger/index.js";
+import toDate from "../../toDate/index.js";
+import getUTCWeek from "../getUTCWeek/index.js";
+import requiredArgs from "../requiredArgs/index.js"; // This function will be a part of public API when UTC function will be implemented.
+// See issue: https://github.com/date-fns/date-fns/issues/376
+
+export default function setUTCWeek(dirtyDate, dirtyWeek, options) {
+  requiredArgs(2, arguments);
+  var date = toDate(dirtyDate);
+  var week = toInteger(dirtyWeek);
+  var diff = getUTCWeek(date, options) - week;
+  date.setUTCDate(date.getUTCDate() - diff * 7);
+  return date;
+}