If the underlying filter sends a lot of ProgressEvent, the current watchers implementation triggered
a visualisation update at each ProgressEvent, thus reducing overall performance

REFAC: change GetResampler method into GetProgressSource for ImageLayerGenerator following Shrink filter refactoring

ENH: robustify behavior of streaming writing in ONERA case and add test abouts streaming writing with scalar/complex image/vector

Number of thread in forward and inverse filter addition for wavelet transform  (2 optional parameter NumberofThread for forward filter and NumberofThreads for backward filter)\n tests with Haar and Daubechies 4 wavelet type