Added avalonia integration and remote proof of concept

Catalog.Communication/Models/MediaFileResponse.cs

@@ -0,0 +1,16 @@
+using System.Net;
+
+namespace Catalog.Communication.Models;
+
+public sealed class MediaFileResponse
+{
+    public required HttpStatusCode StatusCode { get; init; }
+
+    public required byte[] Content { get; init; }
+
+    public string? ContentType { get; init; }
+
+    public string? FileName { get; init; }
+
+    public required IReadOnlyDictionary<string, IReadOnlyList<string>> Headers { get; init; }
+}