Create CODEOWNERS (#1000)

* Create CODEOWNERS

* Use microsoft-go-compiler team

Co-authored-by: Davis Goodin <dagood@users.noreply.github.com>

---------

Co-authored-by: Davis Goodin <dagood@users.noreply.github.com>

CODEOWNERS

@@ -0,0 +1,5 @@
+# Users referenced in this file will automatically be requested as reviewers for PRs that modify the given paths.
+# See https://help.github.com/articles/about-code-owners/
+
+*                                @dotnet/dotnet-docker-reviewers
+build-info/microsoft/go-images/  @dotnet/dotnet-docker-reviewers @dotnet/microsoft-go-compiler