Add sugar for command kind command@botName

[tamtakoe]

If you add your bot to some group and use setMyCommands to create menu then Telegram add bot name to each command name (e.g. command@botName). This case handlers for your commands don't work and you should write something like this

bot.command(['start', `start@${config.botUsername}`], async (ctx) => {
  ...
});

It make sense if bot.command('start', ctx => ...) will handle both start and 'start@myBot' variants and add to ctx bot_name or something like this for command part after the @

[KnorpelSenf]

It already does.

Note that it only handles commands without @ and commands targeted at your bot specifically, not arbitrary other bot names.