Expose ITransportConfiguration on non generic ITransport as well (#168)

Author: Mpdreamz

src/Elastic.Transport/DistributedTransport.cs

@@ -62,6 +62,8 @@ public DistributedTransport(TConfiguration configuration)
 	/// <inheritdoc cref="ITransport{TConfiguration}.Configuration"/>
 	public TConfiguration Configuration { get; }
 
+	ITransportConfiguration ITransport.Configuration => Configuration;
+
 	/// <inheritdoc cref="ITransport.Request{TResponse}"/>
 	public TResponse Request<TResponse>(
 		in EndpointPath path,

src/Elastic.Transport/ITransport.cs

@@ -54,6 +54,9 @@ public Task<TResponse> RequestAsync<TResponse>(
 		CancellationToken cancellationToken = default
 	)
 		where TResponse : TransportResponse, new();
+
+	/// <summary> The <see cref="ITransportConfiguration" /> in use by this transport instance </summary>
+	public ITransportConfiguration Configuration { get; }
 }
 
 /// <summary>
@@ -63,10 +66,8 @@ public Task<TResponse> RequestAsync<TResponse>(
 public interface ITransport<out TConfiguration> : ITransport
 	where TConfiguration : class, ITransportConfiguration
 {
-	/// <summary>
-	/// The <see cref="ITransportConfiguration" /> in use by this transport instance
-	/// </summary>
-	public TConfiguration Configuration { get; }
+	/// <summary> The <see cref="ITransportConfiguration" /> in use by this transport instance </summary>
+	public new TConfiguration Configuration { get; }
 }
 
 /// <summary>