Blazor Server in .NET 8

This project demonstrates how to upgrade Blazor Server apps to .NET 8 and take advantage of the latest Blazor features.

To upgrade an existing Blazor Server app to .NET 8:

1. Update the project file to target net8.0 and package references to the latest .NET 8 versions.
2. Move the contents of App.razor to Routes.razor.
3. Move content from Pages/_Host.cshtml to App.razor:
   1. Update script to blazor.web.js.
   2. Replace tag helpers with Blazor equivalents.
4. Update Program.cs:
   1. Replace AddServerSideBlazor() with AddRazorComponents().AddInteractiveServerComponents().
   2. Add app.UseAntiforgery().
   3. Replace MapBlazorHub() with MapRazorComponents<App>().AddInteractiveServerRenderMode().
   4. Remove app.MapFallbackToPage("/_Host");.