Imprt Spectral Evolution measurement files

[Benjamin Jakimow]

Add Import to load Spectral Evolution measurement files
https://spectralevolution.com/products/software/

• add import for *.sed text files
  https://github.com/wdwzytc/read_sed_spectra_file/blob/main/2021-10-26 read_sed_spectra_file.py
• add import for *.raw binary files

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