[PATCH] org-latex-preview: add org-latex-preview-quiet customization

* lisp/org.el (org-latex-preview): define customizable boolean
org-latex-preview-quiet.

Emacs : GNU Emacs 30.0.91 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.43, cairo version 1.18.2)
of 2024-09-30
Package: Org mode version 9.7.11 (release_9.7.11 @ /usr/local/share/emacs/30.0.91/lisp/org/)

Daanturo