chore: Generator creates separate libraries (#2136)

script/generate

@@ -5,4 +5,4 @@
 DIR=$(dirname $( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd ))
 
 cd google-api-client
-echo 'a' | bundle exec bin/generate-api gen generated --from-discovery --no-preferred-only --names=$DIR/api_names.yaml --names-out=$DIR/api_names_out.yaml
+echo 'a' | bundle exec bin/generate-api gen $DIR/generated --from-discovery --no-preferred-only --names=$DIR/api_names.yaml --names-out=$DIR/api_names_out.yaml