MultiSensorNDVI takes as input :
   - Time of Interest (defined as Start date - End date)
   - Area of Interest (Bounding Box)
   - CRS of Bounding Box
   - The catalog to be used (Data Central Catalogue)
   - Temporary folder for output
NOTES: If several images are found in the specified bounding box and time
       range, then the output will be a list of images.

NDVIStacker takes as input :
   - NDVI images folder, which contains GeoTIFF individual NDVI images
     (1 to n images)
   - output CRS
   - output resolution
   - interpolation method (nearest neighbour, bilinear, bicubic,...)
   - the compositing operation if duplicate pixels (latest,average, maximum,...)
   - output image name and location
NOTES: The output of this process is a Cloud Optimized GeoTIFF image, in the
       specified CRS and resolution.