KSpace definition (#71)

* Improved numerical_settings schema for KSpace: added `KMesh` and `KLinePath` sub-sections and resolve_reciprocal_lattice_vectors methods

* Added KLinePath and KMesh variables with refs to the NumericalSettings sections

* Added testing

Add todo in testing

* Added KSpaceFunctionalities for grouping two common methods to KMesh and KLinePath

* Added methods for KMesh and KLinePath

Changed high_symmetry_path to 2 quantities and fixed tests

* Added functional approach for get_high_symmetry_path_norms

* Added functional programming for KLinePath.resolve_points

* Added testing for KSpaceFunctionalities

* Fix testing for KMesh and KLinePath

src/nomad_simulations/model_method.py

@@ -31,7 +31,7 @@
     Context,
 )
 
-from .numerical_settings import NumericalSettings, KMesh
+from .numerical_settings import NumericalSettings
 from .model_system import ModelSystem
 from .atoms_state import OrbitalsState, CoreHole
 from .utils import is_not_representative
@@ -840,8 +840,6 @@ class ExcitedStateMethodology(ModelMethodElectronic):
         a_eln=ELNAnnotation(component='NumberEditQuantity'),
     )
 
-    q_mesh = SubSection(sub_section=KMesh.m_def)
-
     def normalize(self, archive, logger) -> None:
         super().normalize(archive, logger)