Improve co-registration algorithm

to be improved:

• make the EnMAP band to be used for co-registration configurable (currently band 40, hardcoded)
• post-process the mis-registration array, e.g., handle shifts exceeding the maximum allowed shift after interpolating
• better evaluate different interpolation algorithms to create the mis-registration array
• allow spatial reference images with less than 100% overlap
• improve the documentation of the co-registration feature