feat(ui): FRO-34 Lobby (#21)

Started with Lobby Component

Co-authored-by: LQ63 <lkhermann@web.de>
Co-authored-by: Janis <janis-e@gmx.de>
Reviewed-on: #21
Reviewed-by: Janis <janis-e@gmx.de>
Co-authored-by: lq64 <lq@blackhole.local>
Co-committed-by: lq64 <lq@blackhole.local>

src/runtimeConfig.ts

@@ -2,13 +2,18 @@
 // Reads runtime configuration injected into window.__RUNTIME_CONFIG__ (created by env.js at container start)
 
 declare global {
-  interface Window { __RUNTIME_CONFIG__?: { API_URL?: string } }
+  interface Window { __RUNTIME_CONFIG__?: { API_URL?: string; WEBSOCKET_URL?: string } }
 }
 
 const runtime = (globalThis as any).__RUNTIME_CONFIG__ || {};
 
 export const API_URL = runtime.API_URL || (import.meta.env.VITE_API_URL as string) || 'http://localhost:9000';
+export const WEBSOCKET_URL = runtime.API_URL || (import.meta.env.VITE_WEBSOCKET_URL as string) || 'http://localhost:9000';
 
 export function getApiUrl(): string {
   return API_URL;
 }
+
+export function getWebsocketUrl(): string {
+  return WEBSOCKET_URL;
+}