Create CODEOWNERS

.github/CODEOWNERS

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+# This is a comment.
+
+# Each line is a file pattern followed by one or more owners.
+
+# Source https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners
+
+# These owners will be the default owners for everything in
+
+# the repo. Unless a later match takes precedence,
+
+# the following owers will be requested for
+
+# review when someone opens a pull request.
+
+* @claurau @OASIS-OP-Admin