Add and configure ESLint and Prettier for Discord Bot

[daemon1024]

ESLint performs automated scans of your JavaScript files for common syntax and style errors.

https://eslint.org/docs/user-guide/getting-started

Prettier scans your files for style issues and automatically reformats your code to ensure consistent rules are being followed for indentation, spacing, semicolons, single quotes vs double quotes, etc.

https://prettier.io/docs/en/install.html

These will help us streamline our codebase as well as the review process.

Hi, If it is the first time that you contribute to the bot, follow these steps:

Write a comment in this issue thread to let other possible contributors know that you are working on this bug. For eg : Hey all, I would like to work on this issue., follow Contributing to the bot 🔥✨ and feel free to ask anything related to this issue ✌️.

[deexithparand]

Hey all, I would like to work on this issue. Could you please assign this issue to me.