Feature: support the setting on atomic magnetic moment via ase.atoms.Atoms.magmom

[kirk0830]

Reminder

• Have you linked an issue with this pull request?
• Have you added adequate unit tests and/or case tests for your pull request?
• Have you noticed possible changes of behavior below or in the linked issue?
• Have you explained the changes of codes in core modules of ESolver, HSolver, ElecState, Hamilt, Operator or Psi? (ignore if not applicable)

Linked Issue

Fix #6516

Unit Tests and/or Case Tests for my changes

• see interfaces/ASE_inteface/tests/magnetic.py for integrated test
• see interfaces/ASE_inteface/abacuslite/io/legacyio.py for unittest

What's changed?

• Support the user defined atomic magmom setting by:

import numpy as np
from ase.atoms import Atoms
fe = Atoms(symbols=['Fe'] * 2,
           scaled_positions=[[0., 0., 0.], [0.5, 0.5, 0.5]],
           magmoms=[-1, 1],
           cell=np.eye(3) * 5.2,
           pbc=True)

, the non-colinear cases are also supported, see the example at interfaces/ASE_inteface/exampless/soc.py for more information

Any changes of core modules? (ignore if not applicable)

• No

[mohanchen]

Thanks! LGTM.