Add Lorentz force for charged classical particles

Description

This MR adds the classical Lorentz force for charged particles to the multi-system framework.

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Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.

Codecov Report

Merging #896 into develop will increase coverage by 0.21%. The diff coverage is 89.74%.

@@             Coverage Diff             @@
##           develop     #896      +/-   ##
===========================================
+ Coverage    71.07%   71.28%   +0.21%     
===========================================
  Files          507      508       +1     
  Lines        98807    98880      +73     
===========================================
+ Hits         70223    70487     +264     
+ Misses       28584    28393     -191     

Impacted Files	Coverage Δ
src/system/charged_particle.F90	71.55% <60.00%> (+71.55%)
src/system/classical_particle.F90	87.28% <100.00%> (+0.93%)
src/system/interaction_lorentz_force.F90	100.00% <100.00%> (ø)
src/system/system_mxll.F90	87.36% <100.00%> (+10.41%)
src/basic/messages.F90	62.69% <0.00%> (+0.17%)
src/states/states_mxll.F90	59.44% <0.00%> (+0.34%)
src/hamiltonian/maxwell_boundary_op.F90	51.12% <0.00%> (+1.97%)
src/td/propagator_mxll.F90	25.37% <0.00%> (+4.76%)
... and 4 more

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added 217 commits

• c5b657ae...f0d312ad - 210 commits from branch develop
• c23bae6c - Moved PCM sanity checks from run.F90 to the corresponding run modes.
• 43e8016d - Moved warnings about experimental status of k-points symmetries from run.F90...
• e038e2d6 - Clean the use of use in run.F90. Delete unused CM_MAXWELL_FREE run mode.
• 4b65c8b4 - Add class charged_particle derived from classical_particle.
• 3cca27c9 - Add charged particles to the system factory and the multisystem
• a4f4c586 - Possible fix for calculations with constant external fields within Maxwell
• 4746918c - Add Lorentz force for charged classical particles.

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added 32 commits

• 4746918c...a5e69522 - 31 commits from branch develop
• 23e7b1bc - Add Lorentz force for charged classical particles.

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mentioned in merge request !926 (merged)

added 12 commits

• 23e7b1bc...e37d40ad - 10 commits from branch develop
• fcac9675 - Add Lorentz force for charged classical particles.
• 0e70de2e - The charged particle should only delegate to the classical particle the update...

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assigned to @micael.oliveira

changed milestone to %11.0

approved this merge request

merged

mentioned in commit 86c0c159

mentioned in issue #333 (closed)