Philippe 07/03/2024: move allocation/deallocation of variables used in NAM_BACKUP and NAM_OUTPUT in dedicated subroutines

Philippe 06/03/2024: fix: add correct treatment for Z-split fields with "vertical" dimension equals to NMNHDIM_NOTLISTED (was crashing in DIAG) + better checks if problems

Philippe 28/02/2024: IO_Field_write_byfield_X3: treat special case if GSMONOPROC forced and TPFILE%NSUBFILES_IOZ>0 with several MPI processes (was deadlocking due to MPI communications)

Jean-Pierre 26/02/2024: replace LG?T by LG?, add wind and cloud variables, and replace negative values by XFILLVALUE

(cherry picked from commit 2aabc119)

Philippe 23/02/2024: IO_Bakout_struct_prepare: set correctly the initial model pointers at the end of the subroutine

Philippe 07/02/2024: IO: add LBAK_REDUCE_FLOAT_PRECISION and LIO_ALLOW_REDUCED_PRECISION_BACKUP to allow reduced float precision for backups (use with caution)

Philippe 07/02/2024: IO: add attributes in written netCDF files for compression and float precision reduction

Philippe 02/02/2024: restructure backup and output filelists to keep only the necessary files and not the whole list for the run

Philippe 26/01/2024: Philippe 26/01/2024: bugfix: remove vertical dimension for vertically split fields

(cherry picked from commit 8134fa5d)