In Package Manager Setting, add Scoped Registory "https://package.openupm.com" and add package "jp.nobnak.gist2". In Package Manager Window, add package "Gist" from My Registories.
- Github: https://github.com/nobnak/Gist2
- OpenUPM Package Registory: https://openupm.com/packages/jp.nobnak.gist2/