Hermite-Laguerre Z-pinch solver (2020)

Goal : Write the MOLI solver in Fortran and include a non linear Poisson bracket term to it.

Roadmap : 0) Write MOLI matlab solver in Fortran using Monli1D as starting point 0.1) go from 1D space to 2D fourier and from Hermite basis to Hermite-Laguerre basis <- current stage 0.2) implement linear Poisson equation in fourier space 0.3) implement moment hierarchy linear terms 0.4) implement explicit RK4 time solver 0.5) Benchmark with MOLI matlab results for Z-pinch

1. Implementation of the non linear Poisson brackets term