Renames tile control classes

Adds conditional logging for memory debugging
Hides CrredentialTile3 implementation

src/Lithnet.CredentialProvider/CredentialTile3.cs

@@ -0,0 +1,17 @@
+using System;
+using Lithnet.CredentialProvider.Interop;
+using Microsoft.Extensions.Logging;
+
+namespace Lithnet.CredentialProvider
+{
+    /// <summary>
+    /// Represents a user credential tile that implements the functionality of <see cref="CredentialTile"/> and <see cref="CredentialTile2"/>, but includes support for dynamically updating bitmap images.
+    /// </summary>
+    /// <remarks>This interface is public, but undocumented by Microsoft. It is recommended to use <see cref="CredentialTile2"/> tiles unless this specific functionality is needed</remarks>
+    internal abstract partial class CredentialTile3 : CredentialTile2
+    {
+        protected CredentialTile3(CredentialProviderBase credentialProvider) : this(credentialProvider, null) { }
+
+        protected CredentialTile3(CredentialProviderBase credentialProvider, CredentialProviderUser user) : base(credentialProvider, user) { }
+    }
+}