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/ioredis/built/utils/debug.d.ts

@@ -0,0 +1,16 @@
+declare const MAX_ARGUMENT_LENGTH = 200;
+/**
+ * helper function that tried to get a string value for
+ * arbitrary "debug" arg
+ */
+declare function getStringValue(v: any): string | void;
+/**
+ * helper function that redacts a string representation of a "debug" arg
+ */
+declare function genRedactedString(str: string, maxLen: number): string;
+/**
+ * a wrapper for the `debug` module, used to generate
+ * "debug functions" that trim the values in their output
+ */
+export default function genDebugFunction(namespace: string): (...args: any[]) => void;
+export { MAX_ARGUMENT_LENGTH, getStringValue, genRedactedString };