add PatientSearchViewModel

lib/core/viewModel/PatientSearchViewModel.dart

@@ -0,0 +1,5 @@
+import 'base_view_model.dart';
+
+class PatientSearchViewModel extends BaseViewModel{
+
+}

lib/locator.dart

@@ -35,6 +35,7 @@ import 'core/service/schedule_service.dart';
 import 'core/viewModel/DischargedPatientViewModel.dart';
 import 'core/viewModel/InsuranceViewModel.dart';
 import 'core/viewModel/PatientMuseViewModel.dart';
+import 'core/viewModel/PatientSearchViewModel.dart';
 import 'core/viewModel/SOAP_view_model.dart';
 import 'core/viewModel/doctor_replay_view_model.dart';
 import 'core/viewModel/labs_view_model.dart';
@@ -104,4 +105,5 @@ void setupLocator() {
   locator.registerFactory(() => RadiologyViewModel());
   locator.registerFactory(() => PrescriptionsViewModel());
   locator.registerFactory(() => DischargedPatientViewModel());
+  locator.registerFactory(() => PatientSearchViewModel());
 }