조직도 기능 추가

backend/internal/service/tenant_service_test.go

@@ -72,6 +72,11 @@ func (m *MockTenantRepoForSvc) ListByType(ctx context.Context, tenantType string
 	return args.Get(0).([]domain.Tenant), args.Error(1)
 }
 
+func (m *MockTenantRepoForSvc) DeleteBulk(ctx context.Context, ids []string) error {
+	args := m.Called(ctx, ids)
+	return args.Error(0)
+}
+
 type MockKetoSvcForTenant struct {
 	mock.Mock
 }