[IDEA] Add a license

[Panquesito7]

Description

We should add a license to this repository. This way, people will know what and what not they can do with this repository, permissions, notices, etc.. I suggest adding the MIT license.

Additional Context

https://www.freecodecamp.org/news/how-open-source-licenses-work-and-how-to-add-them-to-your-projects-34310c3cf94/