Enhance `pyotb.any` and `pyotb.all`

pyotb.any and pyotb.all only accepts "enumerated" args like that:

res = pyotb.all('image1.tif', 'image2.tif', 'image3.tif')

However sometimes it would be easier to pass the parameters as a list:

res = pyotb.all(['image1.tif', 'image2.tif', 'image3.tif'])