27e1b377ac
- Add complete mean_field module with 6 submodules - Implement HJB and Fokker-Planck PDE solvers with rayon parallelization - Add forward-backward fixed-point iteration algorithm - Include Nash equilibrium and optimal transport utilities - Add comprehensive Jupyter notebook tutorial with: * Mathematical formulation (HJB and FP equations) * Finite difference methods explanation * Complete congestion game example * 3D visualizations and convergence plots * Citations to Jiang, Chewi, Pooladian (2023) paper - All tests passing (5 tests in mean_field module) - Based on 'Numerical Methods for Mean Field Games' PDF algorithms