Mark contrib value connectors as obsolete

Author: ronaldbarendse

src/Umbraco.Deploy.Contrib/ValueConnectors/BlockEditorValueConnector.cs

@@ -19,6 +19,7 @@ namespace Umbraco.Deploy.Contrib.Connectors.ValueConnectors
     /// <summary>
     /// A Deploy connector for BlockEditor based property editors (ie. BlockList)
     /// </summary>
+    [Obsolete("Use Umbraco.Deploy.Connectors.ValueConnectors.BlockValueConnectorBase instead to support recursive migrators. This class will be removed in a future version.")]
     public abstract class BlockEditorValueConnector : ValueConnectorBase
     {
         private readonly IContentTypeService _contentTypeService;

src/Umbraco.Deploy.Contrib/ValueConnectors/BlockListValueConnector.cs

@@ -9,6 +9,7 @@ namespace Umbraco.Deploy.Contrib.Connectors.ValueConnectors
     /// <summary>
     /// A Deploy connector for the BlockList property editor
     /// </summary>
+    [Obsolete("Deploy 4.9.0 adds an explicit binding to use Umbraco.Deploy.Connectors.ValueConnectors.BlockEditorValueConnector instead to support recursive migrators. This class will be removed in a future version.")]
     public class BlockListValueConnector : BlockEditorValueConnector
     {
         public override IEnumerable<string> PropertyEditorAliases { get; } = new[]

src/Umbraco.Deploy.Contrib/ValueConnectors/MultiUrlPickerValueConnector.cs

@@ -13,6 +13,7 @@
 
 namespace Umbraco.Deploy.Contrib.Connectors.ValueConnectors
 {
+    [Obsolete("Deploy 4.9.0 adds an explicit binding to use Umbraco.Deploy.Connectors.ValueConnectors.MultiUrlPickerValueConnector instead to support recursive migrators. This class will be removed in a future version.")]
     public class MultiUrlPickerValueConnector : ValueConnectorBase
     {
         private readonly IEntityService _entityService;

src/Umbraco.Deploy.Contrib/ValueConnectors/NestedContentValueConnector.cs

@@ -19,6 +19,7 @@ namespace Umbraco.Deploy.Contrib.Connectors.ValueConnectors
     /// <summary>
     /// A Deploy connector for the NestedContent property editor
     /// </summary>
+    [Obsolete("Deploy 4.9.0 adds an explicit binding to use Umbraco.Deploy.Connectors.ValueConnectors.NestedContentValueConnector instead to support recursive migrators. This class will be removed in a future version.")]
     public class NestedContentValueConnector : ValueConnectorBase
     {
         private readonly IContentTypeService _contentTypeService;