Feat: improve code structure and formatting

[andreasnicolaou]

This PR introduces Prettier for consistent code formatting, and a plugin to organize imports.

Whats Added:

• 120 character line width for better readability
• Single quotes for consistency
• Trailing commas with es5 compatibility
• Organization via prettier-plugin-organize-imports

Benefits:

• Consistent code style across all contributors
• Improved readability and maintainability
• Better integration with IDEs and CI/CD workflows

There are 2 new scripts added:

1. npm run format  # Formats all files
2. npm run format:check  # Checks formatting without applying any changes to the files

[andreasnicolaou]

@reblace This addresses your suggestion to submit the prettier configuration as a separate PR. Feel free to review the configuration and let me know if you'd like any adjustments to the formatting rules.