Translate the console log message about modified Groovy files into French

The Groovy file modification warning message may appear simply after a version change or an update. The message should be translated, and its log level may also be adjusted, as it appears cryptic to most users.

Création de l'espace de travail utilisateur de TXM…

Démarrage de TXM 0.8.4 (2025-02-12 08h15) Windows 10, 10.0, amd64…

Some modified Groovy files have been saved in the C:\Users\s\TXM-0.8.4\scripts\groovy\user-2025-04-08 directory (37)

Installation des corpus exemples...