Migrate to Asp.Net Core Web Api

[daullmer]

Migrate the ServiceStack infrastructure to Asp.Net Core Web Api. The endpoint works but SortOrder moved from MediaBrowser.Model.Entities to Jellyfin.Data.Enums so the scan fails with the following exception.

[18:26:21] [ERR] [16] Jellyfin.Server.Middleware.ExceptionMiddleware: Error processing request. URL POST /TMDbBoxSets/Refresh.
System.TypeLoadException: Could not load type 'MediaBrowser.Model.Entities.SortOrder' from assembly 'MediaBrowser.Model, Version=10.7.0.0, Culture=neutral, PublicKeyToken=null'.
   at Jellyfin.Plugin.TMDbBoxSets.TMDbBoxSetManager.GetMoviesFromLibrary()
   at Jellyfin.Plugin.TMDbBoxSets.TMDbBoxSetManager.ScanLibrary(IProgress`1 progress)
   at Jellyfin.Plugin.TMDbBoxSets.Api.TMDbCollectionsController.RefreshMetadataRequest()
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller,
Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync()
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()

Needs jellyfin/jellyfin#3871