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/lib/rtrim.js

@@ -0,0 +1,24 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = rtrim;
+var _assertString = _interopRequireDefault(require("./util/assertString"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+function rtrim(str, chars) {
+  (0, _assertString.default)(str);
+  if (chars) {
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#Escaping
+    var pattern = new RegExp("[".concat(chars.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), "]+$"), 'g');
+    return str.replace(pattern, '');
+  }
+  // Use a faster and more safe than regex trim method https://blog.stevenlevithan.com/archives/faster-trim-javascript
+  var strIndex = str.length - 1;
+  while (/\s/.test(str.charAt(strIndex))) {
+    strIndex -= 1;
+  }
+  return str.slice(0, strIndex + 1);
+}
+module.exports = exports.default;
+module.exports.default = exports.default;