Refactor Code!

What has changed

• A complete refactoring of the code has been performed.
• The project structure has been improved.
• Added file type changelog.txt, config.json, todos.ts,

Bugs fix

• The bot now does not try to disconnect if it is already disabled when using the '/sleep` command.
• I do not know what else, because I forgot to write it down 😅

Full Changelog: you can explore the full list of changes in the commit history, as well as take a look at changelog.txt.