Improve detector distance to XY converter parser

It would be useful for the detector distance parser in dodal to be able to load GDA detector distance files without modification.

On VMXm for example, a detector distance file in GDA like:

#Table giving position of beam X  and Y as a function of detector distance
#Take values from autoprocessing results in SynchWeb
#Or take values from xds (in pixels) and multiply by pixel size 0.075
# 1. DIALS - detector.slow_fast_beam_centre=1277,1303
#                 Ybeam = slow * 0.075
#                 Xbeam = fast * 0.075
#Import data to dials.
#Run dials.show imported.expt for currently slow,fast values.
#Open imported.expt in dials.image_viewer and use ring tool to find differences to new centre and subtract from current values.
#Multiply slow fast pixel values by 0.075 to get mm values.
# values updated 03/12/2021
#E2 9M
#dety=732mm
Units mm mm mm
#287    123.15 187.70
#613    123.15 187.70

#dety=718mm
Units mm mm mm
#282    123.169 168.479
#613    123.169 168.479

#dety=704mm
Units mm mm mm
#282    123.169 154.386
#613    123.169 154.386

#MX Settings
#dety=676
Units mm mm mm
300    123.35 131.77
593    123.35 131.77



#613    123.2 126.2
#
##

# To load lookup table go to jython terminal
# type reloadLookupTables()

failed to parse (due to using multiple spaces as a separator, in this case).

This issue is to adjust dodal's parser to be able to cope with this kind of file, and to write corresponding tests to prove it.

• Suggest gathering a representative sample of these files from MX beamlines and using those as unit-test cases.
• Check the parsing logic used by java to see if there are any other cases we're cot covering properly
• Making Units a "comment" seems wrong, is this going to catch us out if some beamlines start defining different units?
  • I feel we should at least be checking that the units are what we expect.

Once this issue is done, make hyperion_fast_grid_scan in GDA point at DetDistToBeamXYConverter_E9M.txt on VMXm and delete the _hyperion version.