Implement 'bootstrap' DetectorMap task

As an offline task, so prior to any pipeline processing, we need to be able from an ideal detector map, create an initial bootstrap detectormap that already takes into consideration 'large' changes such as slit shifts and rotations.

The intention of this bootstrap detector map is to ensure that all fibers for a given PsfDesign are correctly detected. This leaves finer tuning (CCD shifts for example) to reduceArc.

The new task should take Neon exposures (as Neon provides a small set of spots) and flats to determine the wavelength solution for a set of fibers and the fiber positions on the CCD and consequently the affine (or equivalent) transformation necessary to correct the ideal detectormap.