feat(frontend): added frontend

- Router: client side route handling with client side rendering
- Toast: rought Toast handling for better UX and messaging
- Auth: single point of truth for the Logged in user

This commit doesnt not include the openapi generated code

frontend/src/pages/index.ts

@@ -0,0 +1,8 @@
+import { setTitle, handleRoute } from '@app/routing';
+import './root/root.ts'
+import './chat/chat.ts'
+import './login/login.ts'
+
+// ---- Initial load ----
+setTitle("");
+handleRoute();