system service: deliver initial AppContent entitlement updates through shared queue

src/libs/systemService.h

@@ -0,0 +1,10 @@
+#ifndef EMULATOR_LIBS_SYSTEMSERVICE_H_
+#define EMULATOR_LIBS_SYSTEMSERVICE_H_
+
+namespace Libs::SystemService {
+
+void NotifyEntitlementUpdate();
+
+} // namespace Libs::SystemService
+
+#endif