Redefine PhysicalProperty.value interface

[ndaelman-hu]

Previously, PhysicalProperty.value was defined at the schema level, with its final shape being re-defined during __setattr__.
This limits certain strategies, e.g. MappingAnnotation, which add variables after setting value.

This PR moves the definition of PhysicalProperty.value as a whole to normalization time. The schema definition upon which value is built comes from _base_value.

[coveralls]

Pull Request Test Coverage Report for Build 11804702226

Details

• 65 of 84 (77.38%) changed or added relevant lines in 10 files are covered.
• 81 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-3.2%) to 76.929%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/nomad_simulations/schema_packages/properties/band_gap.py	2	6	33.33%
src/nomad_simulations/schema_packages/properties/greens_function.py	10	14	71.43%
src/nomad_simulations/schema_packages/physical_property.py	35	46	76.09%

Files with Coverage Reduction	New Missed Lines	%
src/nomad_simulations/schema_packages/physical_property.py	1	83.33%
src/nomad_simulations/schema_packages/properties/band_gap.py	5	53.85%
src/nomad_simulations/schema_packages/properties/spectral_profile.py	12	43.03%
src/nomad_simulations/schema_packages/outputs.py	14	80.0%
src/nomad_simulations/schema_packages/properties/greens_function.py	17	69.14%
src/nomad_simulations/schema_packages/properties/band_structure.py	32	51.43%

Totals
Change from base Build 11661595489:	-3.2%
Covered Lines:	1864
Relevant Lines:	2423

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💛 - Coveralls