RM-7627 Adding Base CODEOWNERS file. Please change as desired.

Author: jamesepatrick

.github/CODEOWNERS

@@ -0,0 +1,8 @@
+# Defining Code Owners for GreenFiling.
+# Each line is a file pattern followed by one or more owners. These owners will
+# be the default owners for everything in the repo. Unless a later match takes
+# precedence.
+# See https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
+
+# Default to everything being owned by devteam
+* @greenfiling/devteam