mark old meta service as obsolete

Application/Misc/MetaService.cs

@@ -18,6 +18,7 @@ namespace IW4MAdmin.Application.Misc
     /// implementation of IMetaService
     /// used to add and retrieve runtime and persistent meta
     /// </summary>
+    [Obsolete("Use MetaServiceV2")]
     public class MetaService : IMetaService
     {
         private readonly IDictionary<MetaType, List<dynamic>> _metaActions;

SharedLibraryCore/Interfaces/IMetaService.cs

@@ -8,6 +8,7 @@ using SharedLibraryCore.QueryHelper;
 
 namespace SharedLibraryCore.Interfaces
 {
+    [Obsolete("Use IMetaServiceV2")]
     public interface IMetaService
     {
         /// <summary>