Review of the overall building of any reference manual
Implementation of a compilation process shared between the 3 manuals: now a global document.tex will be used as the main LaTeX file (a symbolic link will refer to it in each ./engine/main directory).
At the time of the manual building, a few small LaTeX files will be imported on the fly from the corresponding folder ./latex/engine/main.
definitions.tex: engine, title, author(s), IPSL publication number and DOI ID
thanks.tex: list of collaborators to be thanked for the writing/reviewing
chapters.tex: ordered list of chapters (relative path to subfiles)
appendices.tex: ordered list of subordinate chapters (relative path to subfiles)