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/validator/es/lib/isBoolean.js

@@ -0,0 +1,15 @@
+import assertString from './util/assertString';
+import includes from './util/includesArray';
+var defaultOptions = {
+  loose: false
+};
+var strictBooleans = ['true', 'false', '1', '0'];
+var looseBooleans = [].concat(strictBooleans, ['yes', 'no']);
+export default function isBoolean(str) {
+  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultOptions;
+  assertString(str);
+  if (options.loose) {
+    return includes(looseBooleans, str.toLowerCase());
+  }
+  return includes(strictBooleans, str);
+}