Add usage of WorkManager to enqueue FullScanWorker in InitializerService

- Instanciate Constraint for the workRequest (Battery not low, and network available)
- Instanciate PeriodicWorkRequest to start FullScanWorker job every 31 minutes with 5 minutes as flex time
- Enqueue the workRequest into WorkManager
- Add the generic Generic work Tag into the work request
- Comment "JobUtils.scheduleScannerJob()" to prevent JobScheduler to run ScannerJob periodically