There is no mechanism to do this automatically. Changes to the CM's master-apps should be infrequent.
You could apply the changes in the folder, via copy or sync, and then hit a rest endpoint to apply the bundle as part of your script...
curl -k -u admin:changeme https://localhost:8089/services/cluster/master/control/control/apply -d skip-validation=true -X POST
This seems to work, even though undocumented...
See here : https://answers.splunk.com/answers/146998/is-there-a-way-to-distribute-cluster-bundle-through-rest-api.html
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