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/getUTCWeekYear/index.js

@@ -0,0 +1,37 @@
+import toInteger from "../toInteger/index.js";
+import toDate from "../../toDate/index.js";
+import startOfUTCWeek from "../startOfUTCWeek/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 getUTCWeekYear(dirtyDate, dirtyOptions) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate, dirtyOptions);
+  var year = date.getUTCFullYear();
+  var options = dirtyOptions || {};
+  var locale = options.locale;
+  var localeFirstWeekContainsDate = locale && locale.options && locale.options.firstWeekContainsDate;
+  var defaultFirstWeekContainsDate = localeFirstWeekContainsDate == null ? 1 : toInteger(localeFirstWeekContainsDate);
+  var firstWeekContainsDate = options.firstWeekContainsDate == null ? defaultFirstWeekContainsDate : toInteger(options.firstWeekContainsDate); // Test if weekStartsOn is between 1 and 7 _and_ is not NaN
+
+  if (!(firstWeekContainsDate >= 1 && firstWeekContainsDate <= 7)) {
+    throw new RangeError('firstWeekContainsDate must be between 1 and 7 inclusively');
+  }
+
+  var firstWeekOfNextYear = new Date(0);
+  firstWeekOfNextYear.setUTCFullYear(year + 1, 0, firstWeekContainsDate);
+  firstWeekOfNextYear.setUTCHours(0, 0, 0, 0);
+  var startOfNextYear = startOfUTCWeek(firstWeekOfNextYear, dirtyOptions);
+  var firstWeekOfThisYear = new Date(0);
+  firstWeekOfThisYear.setUTCFullYear(year, 0, firstWeekContainsDate);
+  firstWeekOfThisYear.setUTCHours(0, 0, 0, 0);
+  var startOfThisYear = startOfUTCWeek(firstWeekOfThisYear, dirtyOptions);
+
+  if (date.getTime() >= startOfNextYear.getTime()) {
+    return year + 1;
+  } else if (date.getTime() >= startOfThisYear.getTime()) {
+    return year;
+  } else {
+    return year - 1;
+  }
+}