Move to Minimal Hosting Model in a backwards compatible way (#14656)

* Use minimal hosting model

* Make CoreRuntime backward compatible to the old hosting model

* Remove unneccessary methods from interface again

* Pushed the timeout for E2E test to 120 minutes instead of 60

* Updated the preview version from 6 to 7

* Explicitly call BootUmbracoAsync

* Add CreateUmbracoBuilder extension method

* Do not add IRuntime as hosted service when using WebApplication/WebApplicationBuilder

* Set StaticServiceProvider.Instance before booting

* Ensure Umbraco is booted and StaticServiceProvider.Instance is set before configuring middleware

* Do not enable static web assets on production environments

* Removed root namespace from viewImports

---------

Co-authored-by: Andreas Zerbst <andr317c@live.dk>
Co-authored-by: Ronald Barendse <ronald@barend.se>

src/Umbraco.Web.Common/DependencyInjection/UmbracoBuilderExtensions.cs

@@ -142,8 +142,6 @@ public static partial class UmbracoBuilderExtensions
                 sp,
                 sp.GetRequiredService<IApplicationDiscriminator>()));
 
-        builder.Services.AddHostedService(factory => factory.GetRequiredService<IRuntime>());
-
         builder.Services.AddSingleton<DatabaseSchemaCreatorFactory>();
         builder.Services.TryAddEnumerable(ServiceDescriptor
             .Singleton<IDatabaseProviderMetadata, CustomConnectionStringDatabaseProviderMetadata>());