chore: add serve command

highscore/app/routing.py

@@ -0,0 +1,7 @@
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "app.settings")
+
+application = get_asgi_application()

highscore/app/served.py

@@ -0,0 +1,19 @@
+import subprocess
+import sys
+from pathlib import Path
+
+
+def serve() -> None:
+    """Start the Daphne ASGI server on 0.0.0.0:8080."""
+    daphne_path = str(Path(sys.path[0]) / "daphne")
+    subprocess.run(  # noqa: S603
+        [
+            daphne_path,
+            "-b",
+            "0.0.0.0",  # noqa: S104
+            "-p",
+            "8080",
+            "app.routing:application",
+        ],
+        check=True,
+    )