Implemented css bundling

Moonlight.ApiServer/Helpers/BundleAssetFileProvider.cs

@@ -0,0 +1,28 @@
+using Microsoft.Extensions.FileProviders;
+using Microsoft.Extensions.FileProviders.Physical;
+using Microsoft.Extensions.Primitives;
+using MoonCore.Helpers;
+
+namespace Moonlight.ApiServer.Helpers;
+
+public class BundleAssetFileProvider : IFileProvider
+{
+    public IDirectoryContents GetDirectoryContents(string subpath)
+     => NotFoundDirectoryContents.Singleton;
+
+    public IFileInfo GetFileInfo(string subpath)
+    {
+        if(subpath != "/css/bundle.css")
+            return new NotFoundFileInfo(subpath);
+
+        var physicalPath = PathBuilder.File("storage", "tmp", "bundle.css");
+        
+        if(!File.Exists(physicalPath))
+            return new NotFoundFileInfo(subpath);
+
+        return new PhysicalFileInfo(new FileInfo(physicalPath));
+    }
+
+    public IChangeToken Watch(string filter)
+     => NullChangeToken.Singleton;
+}