Refactor: standardize namespace and using directive style

Refactored all C# test files to use explicit namespace declarations and moved all using directives inside the namespace block for consistency. Updated assembly info and cache files to reflect the new build. Adjusted MvcTestingAppManifest.json to use fully qualified assembly names. No functional changes; all updates are related to code style, organization, and project metadata.

MediaBrowser.Model/Providers/RemoteImageResult.cs

@@ -3,29 +3,27 @@
 // </copyright>
 
 #nullable disable
-namespace MediaBrowser.Model.Providers
-{
-    /// <summary>
-    /// Class RemoteImageResult.
-    /// </summary>
-    public class RemoteImageResult
-    {
-        /// <summary>
-        /// Gets or sets the images.
-        /// </summary>
-        /// <value>The images.</value>
-        public RemoteImageInfo[] Images { get; set; }
+namespace MediaBrowser.Model.Providers;
+   /// <summary>
+   /// Class RemoteImageResult.
+   /// </summary>
+   public class RemoteImageResult
+   {
+       /// <summary>
+       /// Gets or sets the images.
+       /// </summary>
+       /// <value>The images.</value>
+       public RemoteImageInfo[] Images { get; set; }
 
-        /// <summary>
-        /// Gets or sets the total record count.
-        /// </summary>
-        /// <value>The total record count.</value>
-        public int TotalRecordCount { get; set; }
+       /// <summary>
+       /// Gets or sets the total record count.
+       /// </summary>
+       /// <value>The total record count.</value>
+       public int TotalRecordCount { get; set; }
 
-        /// <summary>
-        /// Gets or sets the providers.
-        /// </summary>
-        /// <value>The providers.</value>
-        public string[] Providers { get; set; }
-    }
-}
+       /// <summary>
+       /// Gets or sets the providers.
+       /// </summary>
+       /// <value>The providers.</value>
+       public string[] Providers { get; set; }
+   }