The license of angular-data-grid #81

Hello,
In the repository I could not find the license.
By publishing the project in github, you opened its sources, but without a license, nobody else can use, copy, distribute, or modify your work without being at risk of take-downs, shake-downs, or litigation (https://opensource.guide/legal/).

Please choose a license and add it to your repository, so we can know if it is appropriate to our particular needs.
To choose a license, you can start here: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/licensing-a-repository

I hope you'll choose a permisive one... Please!