XPS vamas sub-reader: enhance data extraction

[lukaspie]

This is a draft for enhancing the existing Vamas XPS reader.
The Vamas reader reads .vms files, which is the current ISO standard data transfer format (ISO 14976).

• Write CPS data to file
• Extract units for quantities
• Parse vamas files of type IRREGULAR

[coveralls]

Pull Request Test Coverage Report for Build 7756531500

• 0 of 10 (0.0%) changed or added relevant lines in 1 file are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.03%) to 44.559%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pynxtools/dataconverter/readers/xps/vms/vamas.py	0	10	0.0%

Files with Coverage Reduction	New Missed Lines	%
pynxtools/dataconverter/convert.py	1	76.92%
pynxtools/dataconverter/readers/shared/map_concepts/mapping_functors.py	1	11.86%

Totals
Change from base Build 7755071875:	-0.03%
Covered Lines:	4906
Relevant Lines:	11010

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💛 - Coveralls

[lukaspie]

Closed as this will be addressed in the xps reader plugin: FAIRmat-NFDI/pynxtools-xps#10