Added command separator char, improved passing search results to parser

src/Discord.Net.Commands/CommandServiceConfig.cs

@@ -4,6 +4,8 @@
     {
         /// <summary> The default RunMode commands should have, if one is not specified on the Command attribute or builder. </summary>
         public RunMode DefaultRunMode { get; set; } = RunMode.Sync;
+
+        public char SeparatorChar { get; set; } = ' ';
         /// <summary> Should commands be case-sensitive? </summary>
         public bool CaseSensitiveCommands { get; set; } = false;
     }