Update to Discord.js v14

This update is mainly to update to Discord.js v14.

Pretty much all plugins will need to be updated because of the breaking changes of Discord.js v14.

  • update dependencies
  • security improvements
  • some code optimisation
  • fix typo in locales.json
  • change the website in package.json

A new update will come soon to improve the checkupdates command to allow checking updates from NPM