feat: add the MIPS model of AOUPs subjected to the WCA potential

[jung235]

• Add the Weeks-Chandler-Andersen (WCA) potential wca_potential.
• Add PhaseSeparation.
  • As the number of particles increases, JAX precision should be forced to x64.
  • self.precision_x64 = True is automatically used.

[codecov]

Codecov Report

Attention: Patch coverage is 42.05607% with 62 lines in your changes missing coverage. Please review.

Project coverage is 53.80%. Comparing base (c9c3c05) to head (3c4e81d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #11      +/-   ##
==========================================
- Coverage   54.89%   53.80%   -1.09%     
==========================================
  Files          33       34       +1     
  Lines        1124     1221      +97     
==========================================
+ Hits          617      657      +40     
- Misses        507      564      +57     

Files	Coverage Δ
pydiffuser/__init__.py	100.00% <ø> (ø)
pydiffuser/_cli/cli_utils.py	0.00% <ø> (ø)
pydiffuser/models/__init__.py	100.00% <100.00%> (ø)
pydiffuser/models/abp.py	37.50% <ø> (ø)
pydiffuser/models/core/ctrw.py	38.59% <ø> (ø)
pydiffuser/models/core/sde.py	27.63% <ø> (ø)
pydiffuser/models/aoup.py	45.71% <75.00%> (+5.08%)	⬆️
pydiffuser/tracer/ensemble.py	42.94% <50.00%> (+0.08%)	⬆️
pydiffuser/models/core/base.py	83.63% <81.81%> (-0.21%)	⬇️
pydiffuser/models/vicsek.py	24.39% <0.00%> (ø)
... and 2 more