V8: Support allowed types for MNTP member picker (#6524)

src/Umbraco.Core/Models/Entities/IMemberEntitySlim.cs

@@ -0,0 +1,7 @@
+namespace Umbraco.Core.Models.Entities
+{
+    public interface IMemberEntitySlim : IContentEntitySlim
+    {
+
+    }
+}

src/Umbraco.Core/Models/Entities/MemberEntitySlim.cs

@@ -0,0 +1,13 @@
+namespace Umbraco.Core.Models.Entities
+{
+    public class MemberEntitySlim : EntitySlim, IMemberEntitySlim
+    {
+        public string ContentTypeAlias { get; set; }
+
+        /// <inheritdoc />
+        public string ContentTypeIcon { get; set; }
+
+        /// <inheritdoc />
+        public string ContentTypeThumbnail { get; set; }
+    }
+}