Implement 'move [container|window] to workspace number <number>'

include/commands.h

@@ -61,6 +61,12 @@ void cmd_move_con_to_workspace(I3_CMD, char *which);
  */
 void cmd_move_con_to_workspace_name(I3_CMD, char *name);
 
+/**
+ * Implementation of 'move [window|container] [to] workspace number <number>'.
+ *
+ */
+void cmd_move_con_to_workspace_number(I3_CMD, char *which);
+
 /**
  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
  *