Improve random number generation on mcsolve and ssesolve

[albertomercurio]

Description

Reproducibility is a fundamental feature for Monte Carlo simulations and Stochastic Solvers. The previous implementation on mcsolve involved the explicit definition of the seeds vector as an argument. Now, instead, we just need to put the random number generator (together with some optional seed). Given this RNG, every trajectory is completely reproducible.

Moreover, I have also added this feature on ssesolve.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.78%. Comparing base (8f64619) to head (3983afb).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #263      +/-   ##
==========================================
- Coverage   93.33%   92.78%   -0.56%     
==========================================
  Files          31       31              
  Lines        2327     2328       +1     
==========================================
- Hits         2172     2160      -12     
- Misses        155      168      +13     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.