XPS reader: update to new NXmpes after refactor

[lukaspie]

• Update definitions submodule after mpes-refactor
• Add new groups/fields/group to reader config files
• Use nested config file for the XPS sub-readers
• Explicitly read any available information from .sle format (including units for all number field)

ToDo: Allow list of options in config file values, i.e. first the reader searches the metadata, then the ELN (will be new PR)

[coveralls]

Pull Request Test Coverage Report for Build 7531083381

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.06%) to 44.486%

---

Totals
Change from base Build 7277681916:	-0.06%
Covered Lines:	4861
Relevant Lines:	10927

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 7613259204

• 136 of 216 (62.96%) changed or added relevant lines in 4 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+3.8%) to 44.584%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pynxtools/dataconverter/readers/xps/xml/xml_specs.py	6	8	75.0%
pynxtools/dataconverter/readers/xps/reader.py	121	129	93.8%
pynxtools/dataconverter/readers/xps/sle/sle_specs.py	5	75	6.67%

Files with Coverage Reduction	New Missed Lines	%
pynxtools/dataconverter/readers/xps/sle/sle_specs.py	3	12.34%

Totals
Change from base Build 7608498774:	3.8%
Covered Lines:	4906
Relevant Lines:	11004

---

💛 - Coveralls

[domna]

Looks good, except the logging file needs to be removed. I don't know if there are other parts which need to be adapted from #209

Still some failing tests

[domna]

Sorry, I was too quick. There seem still to be a few tests failing after re-enabling the XPSReader test

[domna]

There are some comments on the eln data