Use Discord Command files instead of if/else

[Fubinator]

The Discord.js docs deprecate huge if/else statements for bot commands: https://discordjs.guide/creating-your-bot/adding-more-commands.html#the-problem-with-if-else-if

I agree that the commands are quite confusing, so we should use the recommend Command Handling with individual command files: https://discordjs.guide/command-handling/#individual-command-files

[yerlantemir]

Hi, assign it to me. And I think you should edit issue title, in this case we are not going to use discord commands but discord command files

[Fubinator]

Hey @yerlantemir I've assigned it to you!

[yerlantemir]

done @Fubinator