Create CODEOWNERS (GoogleCloudPlatform#1101)

Author: czahedi

CODEOWNERS

@@ -0,0 +1,16 @@
+# Code owners file.
+# This file controls who is tagged for review for any given pull request.
+#
+# For syntax help see:
+# https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
+
+
+# The php-admins team is the default owner for anything not
+# explicitly taken by someone else.
+*                         @GoogleCloudPlatform/php-admins
+
+/bigtable/                @GoogleCloudPlatform/bigtable-dpe @GoogleCloudPlatform/php-admins
+/cloud_sql/               @GoogleCloudPlatform/cloud-sql-dpes @GoogleCloudPlatform/php-admins
+/datastore/               @GoogleCloudPlatform/firestore-dpe @GoogleCloudPlatform/php-admins
+/firestore/               @GoogleCloudPlatform/firestore-dpe @GoogleCloudPlatform/php-admins
+/storage/                 @GoogleCloudPlatform/storage-dpe @GoogleCloudPlatform/php-admins