Restructures project with feature-based organization

Refactors project structure to support modular, feature-driven development

Introduces comprehensive language localization support
Adds menu management with role-based access control
Implements dynamic sidebar and theme switching capabilities

Enhances project scalability and maintainability

app/Program.cs

@@ -0,0 +1,29 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using CalendarServer.Features.Menu.Services;
+using CalendarServer.Features.Language.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add MVC services
+builder.Services.AddControllersWithViews();
+
+// Register application services
+builder.Services.AddScoped<IMenuService, MockMenuService>();
+builder.Services.AddScoped<ILocalizationService, JsonLocalizationService>();
+
+var app = builder.Build();
+
+// Serve static files from wwwroot
+app.UseStaticFiles();
+
+// Configure routing
+app.UseRouting();
+
+// Map MVC routes
+app.MapControllerRoute(
+    name: "default",
+    pattern: "{controller=Home}/{action=Index}/{id?}");
+
+app.Run("http://localhost:8000");