Extracted some pages to their own assembly and finished the artifact display page code

OpenArchival.Blazor/Program.cs

@@ -14,6 +14,7 @@ builder.Services.AddRazorComponents()
     .AddInteractiveServerComponents();
 builder.Services.AddMudServices();
 builder.Services.AddMudExtensions();
+builder.Services.AddControllers();
 
 // --- Database & Identity Configuration ---
 // Get the single connection string for your PostgreSQL database.
@@ -69,6 +70,8 @@ builder.Services.AddLogging();
 
 var app = builder.Build();
 
+app.MapControllers();
+
 using (var scope = app.Services.CreateScope())
 {
     var serviceProvider = scope.ServiceProvider;