Use the 1000 templates with EF Core 10

Author: ErikEJ

src/GUI/Shared/Helpers/ReverseEngineerHelper.cs

@@ -61,7 +61,7 @@ public static string DropTemplates(string optionsPath, string projectPath, CodeG
                         break;
 
                     case CodeGenerationMode.EFCore10:
-                        t4Version = "900";
+                        t4Version = "1000";
                         break;
 
                     default: