Update Unity project with API source code instead of CPP DLL

Author: jakub-grzesiowski

c-sharp-chat/PubnubChatApi/PubnubChatApi.sln

@@ -14,8 +14,8 @@ Global
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Release|Any CPU.Build.0 = Release|Any CPU
-		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Debug|Any CPU.ActiveCfg = Release|Any CPU
+		{8D3851D4-6FD7-4DE5-9960-DA386442603E}.Debug|Any CPU.Build.0 = Release|Any CPU
 		{54ACBC4B-510A-499F-9494-24F9F90F7B67}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{54ACBC4B-510A-499F-9494-24F9F90F7B67}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{54ACBC4B-510A-499F-9494-24F9F90F7B67}.Release|Any CPU.ActiveCfg = Release|Any CPU

c-sharp-chat/PubnubChatApi/PubnubChatApi/Entities/Chat.cs

@@ -69,6 +69,35 @@ public static async Task<ChatOperationResult<Chat>> CreateInstance(PubnubChatCon
             return result;
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Chat"/> class.
+        /// <para>
+        /// Creates a new chat instance.
+        /// </para>
+        /// </summary>
+        /// <param name="chatConfig">Config with Chat specific parameters</param>
+        /// <param name="pubnub">An existing Pubnub object instance</param>
+        /// <param name="listenerFactory">Optional injectable listener factory, used in Unity to allow for dispatching Chat callbacks on main thread.</param>
+        /// <returns>A ChatOperationResult containing the created Chat instance.</returns>
+        /// <remarks>
+        /// The constructor initializes the Chat object with an existing Pubnub instance.
+        /// </remarks>
+        public static async Task<ChatOperationResult<Chat>> CreateInstance(PubnubChatConfig chatConfig, Pubnub pubnub, ChatListenerFactory? listenerFactory = null)
+        {
+            var chat = new Chat(chatConfig, pubnub, listenerFactory);
+            if (chatConfig.StoreUserActivityTimestamp)
+            {
+                chat.StoreActivityTimeStamp();
+            }
+            var result = new ChatOperationResult<Chat>("Chat.CreateInstance()", chat){Result = chat};
+            var getUser = await chat.GetCurrentUser().ConfigureAwait(false);
+            if (getUser.Error)
+            {
+                result.RegisterOperation(await chat.CreateUser(chat.PubnubInstance.GetCurrentUserId()).ConfigureAwait(false));
+            }
+            return result;
+        }
+        
         internal Chat(PubnubChatConfig chatConfig, PNConfiguration pubnubConfig, ChatListenerFactory? listenerFactory = null)
         {
             PubnubInstance = new Pubnub(pubnubConfig);