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/getUTCWeek/index.js

@@ -0,0 +1,16 @@
+import toDate from "../../toDate/index.js";
+import startOfUTCWeek from "../startOfUTCWeek/index.js";
+import startOfUTCWeekYear from "../startOfUTCWeekYear/index.js";
+import requiredArgs from "../requiredArgs/index.js";
+var MILLISECONDS_IN_WEEK = 604800000; // 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 getUTCWeek(dirtyDate, options) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate);
+  var diff = startOfUTCWeek(date, options).getTime() - startOfUTCWeekYear(date, options).getTime(); // Round the number of days to the nearest integer
+  // because the number of milliseconds in a week is not constant
+  // (e.g. it's different in the week of the daylight saving time clock shift)
+
+  return Math.round(diff / MILLISECONDS_IN_WEEK) + 1;
+}