submodule对gitea不管用，所以直接拉了一份拉格兰

Lagrange.Core/Lagrange.OneBot/Extensions/HostExtension.cs

@@ -0,0 +1,15 @@
+using Lagrange.OneBot.Utility;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace Lagrange.OneBot.Extensions;
+
+public static class HostExtension
+{
+    public static T InitializeMusicSigner<T>(this T host) where T : IHost
+    {
+        host.Services.GetRequiredService<MusicSigner>();
+
+        return host;
+    }
+}