Various improvements to SRHD project
- refactor project to eliminate old broadcasting interface
- add Kastaun's cons2prim routine
- add conservative fixing strategy from Deppe paper; disabled for now, as it current gives wrong results
- fix entropy variables computation to align with EFL and ELH paper
- add various srhd 1d parfiles, although none of them is enabled yet
- add initial data computation for the
simple_wave
test from the EFL and the older WENO paper of Sebastiano - add options
mda_n_low, mda_n_high
to control the truncation orders of the MDA viscosity method