Re-sync with internal repository

CONTRIBUTING.md

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+# Contributing
+We want to make contributing to this project as easy and transparent as possible.
+
+## Pull Requests
+We actively welcome your pull requests.
+
+1. Fork the repo and create your branch from `main`.
+2. If you've added code that should be tested, add tests.
+3. If you've changed APIs, update the documentation.
+4. Ensure the test suite passes.
+5. Make sure your code lints.
+6. If you haven't already, complete the Contributor License Agreement ("CLA").
+
+## Contributor License Agreement ("CLA")
+In order to accept your pull request, we need you to submit a CLA. You only need to do this once to work on any of Facebook's open source projects.
+
+Complete your CLA here: <https://code.facebook.com/cla>
+
+## Issues
+We use GitHub issues to track public bugs. Please ensure your description is clear and has sufficient instructions to be able to reproduce the issue.
+
+Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe disclosure of security bugs. In those cases, please go through the process outlined on that page and do not file a public issue.
+
+## License
+By contributing, you agree that your contributions will be licensed under the LICENSE file in the root directory of this source tree.

README.md

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 # Unity-InteractionSDK-Samples
 
 Sample projects to showcase the Unity Meta XR Interaction SDK.
+
+## Licenses
+
+The [MIT LICENSE](./LICENSE.txt) applies to the majority of the project, however files from [Text Mesh Pro](https://unity.com/legal/licenses/unity-companion-license) are licensed under their respective licensing terms.