Hall schema and parser for IKZ

MANIFEST.in

gui/src/metainfo.json

gui/src/searchQuantities.json

gui/src/unitsData.js

nomad/datamodel/metainfo/__init__.py

nomad/datamodel/metainfo/eln/ikz_hall/__init__.py

nomad/datamodel/metainfo/eln/ikz_hall/hall_instrument.py

nomad/datamodel/metainfo/eln/ikz_hall/measurement.py

nomad/datamodel/metainfo/eln/ikz_hall/nexus_to_msection.py

nomad/units/default_en.txt

...ainfo/eln/hall/22-127-G_20K-320K_TT-Halter_WDH_060722.txt

...hall/HMS-Configuration-Pietsch_Hall-TT-Halter_15-350K.txt

...amodel/metainfo/eln/hall/base_classes.schema.archive.yaml

...datamodel/metainfo/eln/hall/hall_python.data.archive.yaml

...tamodel/metainfo/eln/hall/hall_python.schema.archive.yaml

tests/datamodel/metainfo/eln/test_hall.py