Specview export tof wavelength

[JackEAllen]

Issue

Closes #2216

Description

• Add columns to the CSV file exported by the spectrum viewer to include the unit conversions: ToF, Wavelength and Energy
• Add row below header to specify units
• Update tests to reflect changes made as part of this issue to spectrum viewer CSV export format

Testing

• Manually tested and compared old output to new output (see screenshots)
• Checked unit tests pass

CSV output format with the following files loaded: sample, open

CSV output format with the following files loaded: sample, open, spectra log

Acceptance Criteria

• Spectrum Viewer CSV export without spectrum loaded exports in the same format as previously (no ToF, Wavelength or Energy)
• Spectrum viewer CSV export with spectrum file loaded includes ToF, Wavelength and Energy Units including recon row denoting unit of measurement
• Tests Pass

Documentation

How have you changed the documentation to reflect your changes? All changes should be noted in the appropriate file in docs/release_notes

Updated Release Notes: docs/release_notes/next/feature-2216-export_tof_wavelength_and_energy_to_csv

[coveralls]

coverage: 72.774% (+0.04%) from 72.735%
when pulling fe00cd2 on specview_export_tof_wavelength
into 4d2ef3e on main.

[coveralls]

coverage: 72.761% (+0.03%) from 72.735%
when pulling 1c42a4e on specview_export_tof_wavelength
into 4d2ef3e on main.

[coveralls]

coverage: 72.731% (+0.02%) from 72.713%
when pulling ef67ddf on specview_export_tof_wavelength
into 937bb36 on main.

[coveralls]

coverage: 72.726% (+0.01%) from 72.713%
when pulling 5bb4e6d on specview_export_tof_wavelength
into 937bb36 on main.

[samtygier-stfc]

Some small changes

[coveralls]

coverage: 72.771% (+0.02%) from 72.75%
when pulling fa39ff4 on specview_export_tof_wavelength
into f0def70 on main.

[samtygier-stfc]

Looks good now. I've tested making some CSV files.