message: Add trademark section to readme
  Add trademark section to readme
diff: @@ -275,4 +275,8 @@ Security issues and bugs should be reported privately, via email, to the Microso
  Azure SDK for C++ is licensed under the [MIT](https://github.com/Azure/azure-sdk-for-cpp/blob/main/LICENSE.txt) license.
  +### Trademarks
  +
  +This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow [Microsoft's Trademark & Brand Guidelines](https://www.microsoft.com/legal/intellectualproperty/trademarks/usage/general). Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.
  +
  ![Impressions](https://azure-sdk-impressions.azurewebsites.net/api/impressions/azure-sdk-for-cpp%2FREADME.png)
  