[owners] Add OWNERs files to protobuf

Bug: 78772
Change-Id: I574c373d325586da6d6fb28edfd851219e1a399b
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/protobuf/+/543343
Reviewed-by: Zach Bush <zmbush@google.com>
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..8f39fac
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,9 @@
+azani@google.com
+camrdale@google.com
+jaredweinstein@google.com
+ninai@google.com
+pesk@google.com
+stevefung@google.com
+zmbush@google.com
+
+# COMPONENT: Cobalt