moved files to experimental folder (#3261)

Co-authored-by: id4s <[email protected]>

Author: brentschmaltz

src/Microsoft.IdentityModel.JsonWebTokens/JsonWebTokenHandler.ClaimsIdentity.cs renamed to src/Microsoft.IdentityModel.JsonWebTokens/Experimental/JsonWebTokenHandler.ClaimsIdentity.cs

@@ -3,13 +3,12 @@
 
 using System;
 using System.Diagnostics;
-using Microsoft.IdentityModel.Tokens.Experimental;
 #if !NET8_0_OR_GREATER
 using System.Text;
 #endif
 
 #nullable enable
-namespace Microsoft.IdentityModel.Tokens
+namespace Microsoft.IdentityModel.Tokens.Experimental
 {
     internal class SecurityTokenArgumentNullException : ArgumentNullException
     {

src/Microsoft.IdentityModel.JsonWebTokens/JsonWebTokenHandler.DecryptToken.cs renamed to src/Microsoft.IdentityModel.JsonWebTokens/Experimental/JsonWebTokenHandler.DecryptToken.cs

@@ -2,9 +2,8 @@
 // Licensed under the MIT License.
 
 using Microsoft.IdentityModel.Abstractions;
-using Microsoft.IdentityModel.Tokens.Experimental;
 
-namespace Microsoft.IdentityModel.Tokens
+namespace Microsoft.IdentityModel.Tokens.Experimental
 {
     /// <summary>
     /// Contains information so that logs can be written when needed.

src/Microsoft.IdentityModel.JsonWebTokens/JsonWebTokenHandler.ReadToken.cs renamed to src/Microsoft.IdentityModel.JsonWebTokens/Experimental/JsonWebTokenHandler.ReadToken.cs

@@ -7,7 +7,6 @@
 using System.Xml;
 using Microsoft.IdentityModel.Logging;
 using Microsoft.IdentityModel.Tokens;
-//using Microsoft.IdentityModel.Tokens.Experimental;
 using static Microsoft.IdentityModel.Logging.LogHelper;
 
 namespace Microsoft.IdentityModel.Xml