Consolidate data access control backoffice updates

src/main/java/com/cloudhandson/vpdbackoffice/service/ExternalAuthorizationSynchronizer.java

@@ -0,0 +1,7 @@
+package com.cloudhandson.vpdbackoffice.service;
+
+/** Optional bridge implemented by an external authorization runtime. */
+public interface ExternalAuthorizationSynchronizer {
+
+  void synchronize(String reason);
+}