Adds MIT License

[koppor]

A "proper" license is crucial for a project to be used.

Quoting https://choosealicense.com/

An open source license protects contributors and users. Businesses and savvy developers won’t touch a project without this protection.

More details at https://choosealicense.com/no-permission/#for-users

When you make a creative work (which includes code), the work is under exclusive copyright by default. Unless you include a license that specifies otherwise, nobody else can copy, distribute, or modify your work without being at risk of take-downs, shake-downs, or litigation. Once the work has other contributors (each a copyright holder), “nobody” starts including you.

I assume you want it "simple and permissive". Therefore, I propose the MIT license: