make : // TODO: Make a generic service for any LookupData type (#594)

* make :  // TODO: Make a generic service for any LookupData type => CatalogLookupDataService

* Update src/BlazorAdmin/Services/CachedCatalogTypeServiceDecorator.cs

Co-authored-by: Steve Smith <steve@kentsmiths.com>

src/BlazorShared/Interfaces/ICatalogLookupDataService.cs

@@ -0,0 +1,12 @@
+using BlazorShared.Models;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace BlazorShared.Interfaces
+{
+    public interface ICatalogLookupDataService<TLookupData> where TLookupData : LookupData
+    {
+        Task<List<TLookupData>> List();
+        Task<TLookupData> GetById(int id);
+    }
+}