Bot will now 'try' to set status to invisible before going offline when '.die' command is used, but it doesn't seem to have (much/any) effect. .qsearch is more powerful

src/NadekoBot/Modules/Administration/Self/SelfCommands.cs

@@ -335,6 +335,7 @@ public partial class Administration
         {
             try
             {
+                await _client.SetStatusAsync(UserStatus.DoNotDisturb);
                 await ReplyConfirmLocalizedAsync(strs.shutting_down);
             }
             catch