Pixels not fully transformed in cut_sym

[oerc0122]

Currently cut with symmetry does not transform the pixels when they are rebinned in a symmetrised cut. This means that the pixels are binned appropriately, but the connection between pixels and image is broken.

The solution to this is to pass the symmetry operations all the way through to cut_accumulate_data_ which should transform the pixels following the cut akin to how symmetrise_sqw transforms the pixels.

[abuts]

A projection uses generic bin_pixels and generic transform_pix_to_img to bin pixels

pix_transformed = obj.transform_pix_to_img(pix_candidates);

transform_pix_to_img should be modified to form: [pix_transformed,pix_candidates] = obj.transform_pix_to_img(pix_candidates);

and if projection has symmetry operation attached to it (in additional property), pix_candidates should be transformed using symmetry too.

Alternatively, overload line_proj to line_proj_rotation & line_proj_folding which have transform_pix_to_img specialized.