feat: alter the simulation strategy for CTRW

[jung235]

• Alter the CTRW strategy to generate Ensemble.
  • See levy and rtp.
• self.precision_x64 = True is automatically set to use int64.

[codecov]

Codecov Report

Attention: Patch coverage is 86.29032% with 17 lines in your changes missing coverage. Please review.

Project coverage is 77.19%. Comparing base (3c4e81d) to head (d54b807).
Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #13       +/-   ##
===========================================
+ Coverage   53.80%   77.19%   +23.38%     
===========================================
  Files          34       36        +2     
  Lines        1221     1342      +121     
===========================================
+ Hits          657     1036      +379     
+ Misses        564      306      -258     

Files	Coverage Δ
pydiffuser/__init__.py	100.00% <100.00%> (ø)
pydiffuser/models/bm.py	73.17% <100.00%> (+1.74%)	⬆️
pydiffuser/models/mips.py	98.57% <ø> (+68.01%)	⬆️
pydiffuser/models/vicsek.py	98.75% <ø> (+74.35%)	⬆️
pydiffuser/utils/jitted.py	86.11% <100.00%> (+24.57%)	⬆️
pydiffuser/utils/random.py	100.00% <100.00%> (ø)
tests/utils/test_jitted.py	100.00% <100.00%> (ø)
pydiffuser/models/rtp.py	87.87% <93.33%> (+36.59%)	⬆️
pydiffuser/utils/helpers.py	71.42% <71.42%> (ø)
pydiffuser/models/levy.py	84.48% <90.00%> (+29.31%)	⬆️
... and 1 more

... and 9 files with indirect coverage changes