chore: add common repo files
diff --git a/java-common-protos/java.header b/java-common-protos/java.header
new file mode 100644
index 0000000..3a9b503
--- /dev/null
+++ b/java-common-protos/java.header
@@ -0,0 +1,15 @@
+^/\*$
+^ \* Copyright \d\d\d\d,? Google (Inc\.|LLC)( All [rR]ights [rR]eserved\.)?$
+^ \*$
+^ \* Licensed under the Apache License, Version 2\.0 \(the "License"\);$
+^ \* you may not use this file except in compliance with the License\.$
+^ \* You may obtain a copy of the License at$
+^ \*$
+^ \*[ ]+https?://www.apache.org/licenses/LICENSE-2\.0$
+^ \*$
+^ \* Unless required by applicable law or agreed to in writing, software$
+^ \* distributed under the License is distributed on an "AS IS" BASIS,$
+^ \* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied\.$
+^ \* See the License for the specific language governing permissions and$
+^ \* limitations under the License\.$
+^ \*/$
