feat: add release asset upload and cleanup to SyncService

Program.cs

@@ -14,7 +14,7 @@ builder.Services.AddSingleton(repositoryConfig);
 var client = new HttpClient();
 client.DefaultRequestHeaders.Add("User-Agent", "ForgejoReleaseSync");
 client.DefaultRequestHeaders.Add("Accept", "application/json");
-client.Timeout = TimeSpan.FromSeconds(90);
+client.Timeout = TimeSpan.FromMinutes(3);
 client.MaxResponseContentBufferSize = 1024 * 1024 * 1;
 builder.Services.AddSingleton(client);