ENH: use Start/Commit Transaction for faster OGR output

Modules/Learning/Sampling/src/otbSampleAugmentationFilter.cxx

@@ -204,6 +204,13 @@ SampleAugmentationFilter
 
   auto featureCount = outputLayer.GetFeatureCount(false);
   auto templateFeature = this->SelectTemplateFeature(inputLayer, classField, label);
+
+  OGRErr err = outputLayer.ogr().StartTransaction();
+  if (err != OGRERR_NONE)
+    {
+    itkExceptionMacro(<< "Unable to start transaction for OGR layer " << outputLayer.ogr().GetName() << ".");
+    }
+
   for(const auto& sample : samples)
     {
     ogr::Feature dstFeature(outputLayer.GetLayerDefn());
@@ -220,6 +227,11 @@ SampleAugmentationFilter
       }
     outputLayer.CreateFeature( dstFeature );
     }
+  err = outputLayer.ogr().CommitTransaction();
+  if (err != OGRERR_NONE)
+    {
+    itkExceptionMacro(<< "Unable to commit transaction for OGR layer " << outputLayer.ogr().GetName() << ".");
+    }
 }
 
 std::set<size_t>