add new tool: msp_split

[wverastegui]

No description provided.

[hechth]

When testing the tool with the file available here, it fails with the following error:

Traceback (most recent call last):
  File "/m2b/home/hechth/git/recetox/galaxytools/tools/msp_split/splitMSP.py", line 43, in <module>
    split_spectra(filename, outdir)
  File "/m2b/home/hechth/git/recetox/galaxytools/tools/msp_split/splitMSP.py", line 31, in split_spectra
    return write_spectra(filename, outdir)
  File "/m2b/home/hechth/git/recetox/galaxytools/tools/msp_split/splitMSP.py", line 26, in write_spectra
    save_as_msp(spectra[i], outpath)
  File "/home/hechth/miniconda3/envs/__matchms@0.14.0/lib/python3.9/site-packages/matchms/exporting/save_as_msp.py", line 56, in save_as_msp
    with open(filename, "w", encoding="utf-8") as outfile:
FileNotFoundError: [Errno 2] No such file or directory: 'output/Benzanthracene/Benzophenanthrene.msp'

This is due to the name of a specific spectrum having a / character in the filename:

NAME: Benzanthracene/Benzophenanthrene
SCANNUMBER: -1
RETENTIONTIME: -1
RETENTIONINDEX: 2470
PRECURSORMZ: 228.09334
PRECURSORTYPE: [M]+
IONMODE: Positive
...

This could be fixed by replacing illegal characters from the compound name (such as / or other characters) with _ or so to avoid these errors. The tool test should also be extended by a case which covers this.

[hechth]

Looks good to me, just please address the mentioned points.

[martenson]

Thanks @wverastegui !