ChatColors: Add a message forward.

Allows to block message per client.

custom-chatcolors/scripting/include/ccc.inc

@@ -134,12 +134,12 @@ native int CCC_ResetTag(int client);
 /**
  * Called when a message has been fully colored and will be sent, unless further plugins modify it through Simple Chat Processor
  * 
+ * @param client		Recieving client index
  * @param author		Author client index
  * @param message		Message
- * @param maxlen		Maximum length of message buffer
- * @noreturn
+ * @return				Plugin_Handled to block message, Plugin_Continue to allow message
  */
-//forward CCC_OnChatMessage(author, String:message[], maxlen);
+forward Action CCC_OnChatMessage(int client, int author, const char[] message);
 
 /**
  * Called when a client's colors and tag are about to be loaded from the config file