Quentin 19/07/2022: add turb mesonh KTEST to test online LES diag and netCDF groups + change mesonh/aux/mode_budget to MNH/budget.f90

The budget subroutines have been cleaned
Unused subroutines in the arome directory have been removed
Minor update of the check_commit_* scripts

Documentation updated with the inclusion of the tools
Selection of subdirectories to include during copy of repository in check_commit_* scripts
 - to limit volume
 - to reduce the risk of having a broken symlink (that could happen in the build directory)
Missing quotes in prep_code