Added missing SetApiCredentials on socket client

CryptoExchange.Net/Clients/BaseSocketClient.cs

@@ -6,6 +6,7 @@ using System.Linq;
 using System.Net.WebSockets;
 using System.Threading;
 using System.Threading.Tasks;
+using CryptoExchange.Net.Authentication;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Objects;
 using CryptoExchange.Net.Sockets;
@@ -111,6 +112,13 @@ namespace CryptoExchange.Net
             ClientOptions = options;
         }
 
+        /// <inheritdoc />
+        public void SetApiCredentials(ApiCredentials credentials)
+        {
+            foreach (var apiClient in ApiClients)
+                apiClient.SetApiCredentials(credentials);
+        }
+
         /// <summary>
         /// Set a delegate to be used for processing data received from socket connections before it is processed by handlers
         /// </summary>

CryptoExchange.Net/Interfaces/ISocketClient.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Threading.Tasks;
+using CryptoExchange.Net.Authentication;
 using CryptoExchange.Net.Objects;
 using CryptoExchange.Net.Sockets;
 
@@ -15,6 +16,12 @@ namespace CryptoExchange.Net.Interfaces
         /// </summary>
         BaseSocketClientOptions ClientOptions { get; }
 
+        /// <summary>
+        /// Set the API credentials for this client. All Api clients in this client will use the new credentials, regardless of earlier set options.
+        /// </summary>
+        /// <param name="credentials">The credentials to set</param>
+        void SetApiCredentials(ApiCredentials credentials);
+
         /// <summary>
         /// Incoming kilobytes per second of data
         /// </summary>