v1.3.0 Restructure Saxonite workspace and upgrade to .NET 10 (#1)

Move Saxonite’s projects into a dedicated `Workspace` folder and align the solution with .NET 10 and the current Common workspace. Update encryption integration, test project structure and coverage, and repository guidance and upgrade notes.

- Relocate application and library projects while retaining Git rename history.
- Split tests into Admin, Online, and Shared projects; add representative behavioral and serialization tests.
- Update Common integration, application version, and repository documentation.

Application version: 1.3.0

Reviewed-on: #1
Co-authored-by: andy <andy@sarand.com>

Workspace/SaxoniteCoreWeb/Base/Middleware/SaxModelBinderProvider.cs

@@ -0,0 +1,43 @@
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Saxonite.Net.Core.Web.Base.Middleware
+{
+	//=======================================================================
+	/// <summary>
+	/// Maps a browser request to a data object. Default class provides a base implementation of a model binder.
+	/// <para>Overridden to trim whitespace from input values.</para>
+	/// </summary>
+	public class SaxModelBinderProvider : IModelBinderProvider
+	{
+		//-------------------------------------------------------------------
+		// Data members.
+
+		//-------------------------------------------------------------------
+		// Construction.
+		public SaxModelBinderProvider()
+		{
+		}
+
+		//-------------------------------------------------------------------
+		public IModelBinder GetBinder(ModelBinderProviderContext context)
+		{
+			if (context == null) throw new ArgumentNullException(nameof(context));
+
+			if (context.Metadata.IsComplexType && !context.Metadata.IsCollectionType)
+			{
+				var propertyBinders = context.Metadata.Properties.ToDictionary(property => property, context.CreateBinder);
+				ILoggerFactory loggerFactory = (ILoggerFactory)context.Services.GetService(typeof(ILoggerFactory));
+				return new SaxModelBinder(propertyBinders, loggerFactory);
+			}
+
+			// Default - return null so that default binding provider is used.
+			return null;
+		}
+	}
+	//=======================================================================
+}