feat: Add real-time quiz lobby functionality

- Implement WebSocket-based lobby system for quiz participants
- Add lobby page with real-time participant updates
- Create LobbyConsumer for WebSocket communication
- Add routing configuration for WebSocket connections
- Update requirements with WebSocket dependencies
- Add development and production server documentation

This change enables real-time quiz lobbies where participants can
join and wait for the quiz to start, with instant updates for all
connected users.

django/core/asgi.py

@@ -8,9 +8,21 @@ https://docs.djangoproject.com/en/5.1/howto/deployment/asgi/
 """
 
 import os
-
 from django.core.asgi import get_asgi_application
+from channels.routing import ProtocolTypeRouter, URLRouter
+from channels.auth import AuthMiddlewareStack
+import django
 
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'core.settings')
+django.setup()
 
-application = get_asgi_application()
+from play.routing import websocket_urlpatterns
+
+application = ProtocolTypeRouter({
+    'http': get_asgi_application(),
+    'websocket': AuthMiddlewareStack(
+        URLRouter(
+            websocket_urlpatterns
+        )
+    ),
+})

django/core/settings.py

@@ -42,10 +42,12 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'channels',
 ]
 
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
+    'whitenoise.middleware.WhiteNoiseMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
@@ -73,6 +75,13 @@ TEMPLATES = [
 ]
 
 WSGI_APPLICATION = 'core.wsgi.application'
+ASGI_APPLICATION = 'core.asgi.application'
+
+CHANNEL_LAYERS = {
+    'default': {
+        'BACKEND': 'channels.layers.InMemoryChannelLayer'
+    }
+}
 
 
 # Database
@@ -85,6 +94,12 @@ DATABASES = {
     }
 }
 
+STORAGES = {
+    "staticfiles": {
+        "BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
+    },
+}
+
 
 # Password validation
 # https://docs.djangoproject.com/en/5.1/ref/settings/#auth-password-validators
@@ -121,6 +136,7 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/5.1/howto/static-files/
 
 STATIC_URL = '/static/'
+STATIC_ROOT = BASE_DIR / "staticfiles"
 STATICFILES_DIRS = [BASE_DIR / 'static']
 
 # Default primary key field type