Optimizing website for faster loading times

[Axolodev]

List of changes

1. Changed format of images from jpeg and png to avif for faster loading times using avif-cli.
2. Formatted code using Prettier for better readability.
3. Removed unused files.
4. Remove unused or unnecessary code. (Note: this deleted code can still be found here on GitHub.)
5. Fix broken bits in the code.
6. Add .gitignore and .prettierrc