[LyX/2.5.x] Add support for the Elsevier CAS classes

[Juergen Spitzmueller]

commit 78ea5b30dcab0d5d679a6431727fc33107acc91d
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sun Jul 5 09:46:29 2026 +0200

    Add support for the Elsevier CAS classes
    
    Provided by Marco Morandini, with tweaks by myself

 lib/Makefile.am                                    |    5 +
 .../Articles/Elsevier_CAS_%28Double_Column%29.lyx  | 1653 ++++++++++++++++++++
 .../Articles/Elsevier_CAS_%28Single_Column%29.lyx  | 1634 +++++++++++++++++++
 lib/layouts/cas-common.inc                         |  808 ++++++++++
 lib/layouts/cas-dc.layout                          |   34 +
 lib/layouts/cas-sc.layout                          |   30 +
 src/insets/InsetFloat.cpp                          |   14 +-
 status.25x                                         |    2 +-
 8 files changed, 4177 insertions(+), 3 deletions(-)