Release code design restriction that HDF5 EBSD

[mkuehbach]

HDF5 parsers currently collect first everything and then pass to pyxem for plotting, instead make ori plotting functions calls from within these individual parsers. Will remove nxs_pyxem parser as such but make it a utility, this is cleaner to later add support for other technique such as EDS that is also shipped via same HDF5 files. APEX is one example that does this already.

• [x] apex
• [x] bruker
• [x] dream3d
• [x] ebsd
• [x] edax
• [x] emsoft
• [x] oxford

Testing:

• [x] Recover example files for each
• [x] Test