License this project

[ShamrockLee]

Description

This project currently doesn't include a LICENSE file, nor is there information about licensing inside the READMT.md. As a result, it is currently all-rights-reserved, and other people cannot download and use it legally.

Thank you for creating this great project! It would be cool if it can be distributed under an open source license.

Use case

• I'm working on the CMake tooling of Nixpkgs (the official repository of a cross-platform package manager Nix), and plans to add some test packages for the CI. This project would be a great test target if it could be distributed under an open-source license.

• People are trying to contribute via pull requests (Update README.md, add .gitignore reformat build_cmake.yml #3). It requires a license to create a clean ground of contributions. An all-rights-reserved project merging an all-rights-reserved PR will results in a mixture that no one can use legally.