Implement community-requested feedback into em parsers 2

[mkuehbach]

• [ ] Implement reading of generic TIFF based on the generic example from the KIT
• [ ] Implement reading of EDS data from Oxford Instruments H5OINA (bilateral work with Philippe Pinard from Oxford Instruments)
• [ ] NXem_ebsd, Explore content of Bruker BCF EBSD files / Try to customize access to BCF files (Bruker Nanoanalytics already contacted by Markus), or rather use HDF5 examples if these tripple in from Alex Austin