2.0 CLI

What's Changed

• Feature/cli unificada by @Cerrudoxx in #7
• Remove leftover tests files by @Cerrudoxx in #8

Full Changelog: 1.0...2.0

1.0 Base

Add CONTRIBUTING.md for contribution guidelines

Added a CONTRIBUTING.md file to guide potential contributors on how to contribute to the project, including reporting bugs, making pull requests, and adhering to code style.