chore: copyright notice

README.md

@@ -92,4 +92,10 @@ Outside the source centralized in this repo, NativeScript consists of a few othe
 - [Artwork](https://github.com/NativeScript/artwork)
  Want to use our logo or colors? Feel free to use any of our ready-to-use media material.
 
+## Copyright notice
+
+Copyright [OpenJS Foundation](https://openjsf.org) and `NativeScript` contributors. All rights reserved. The [OpenJS Foundation](https://openjsf.org) has registered trademarks and uses trademarks. For a list of trademarks of the [OpenJS Foundation](https://openjsf.org), please see our [Trademark Policy](https://trademark-policy.openjsf.org/) and [Trademark List](https://trademark-list.openjsf.org/). Trademarks and logos not indicated on the [list of OpenJS Foundation trademarks](https://trademark-list.openjsf.org) are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
+
+[The OpenJS Foundation](https://openjsf.org/) | [Terms of Use](https://terms-of-use.openjsf.org/) | [Privacy Policy](https://privacy-policy.openjsf.org/) | [OpenJS Foundation Bylaws](https://bylaws.openjsf.org/) | [Trademark Policy](https://trademark-policy.openjsf.org/) | [Trademark List](https://trademark-list.openjsf.org/) | [Cookie Policy](https://www.linuxfoundation.org/cookies/)
+
 <h3 align="center">Made with ❤️</h3>