Add GitHub CODEOWNERS file (#2835)
Add GitHub CODEOWNERS file (#2835)

https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
aws/aws-sdk-java-v2,aws/aws-sdk-java-v2,aws/aws-sdk-java-v2,aws/aws-sdk-java-v2,aws/aws-sdk-java-v2