Add license documentation

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: pierceboggan

License.md

@@ -0,0 +1 @@
+© GitHub, Inc. All rights reserved.

README.md

@@ -58,6 +58,10 @@ Use the issue forms in this repository to report a bug or propose an improvement
 - Expected vs. actual behavior
 - Screenshots or logs
 
+## License
+
+© GitHub, Inc. All rights reserved. See [License.md](./License.md).
+
 # Data and telemetry
 
 If you use the GitHub Copilot App with your GitHub Copilot account, we may collect usage data (such as code acceptance or rejections), associated conversation data, and user feedback submitted via the feedback dialog. See our [GitHub Copilot Trust Center](https://copilot.github.trust.page) for more information.