Please add a license file to the repository

[BastiQ]

To be able to use this repo, an OS license file is required, or is this not planned?

[radroid]

I would like to contribute to the repo, if the license can be updated, I will create a pull request

[JaneSjs]

Hello Everyone,
Thank you for your interest in enhancing our demos. We value your willingness to contribute to our project.
 
This code example is provided for demonstration purposes. You are free to use, modify, and distribute the source code of this demo. Please note that this demo uses SurveyJS libraries, which require a commercial license for production usage. For detailed licensing information, please visit: https://surveyjs.io/Licensing.
 
We warmly welcome contributions to enhance this demo. Please submit a pull request (PR) with your proposed changes, and our team will review it with constructive feedback. To ensure code quality, please feel free to include tests covering your changes within your PR.
 
Thank you