Update copyright in all files each new year

Each new year, the copyright notice files must be updated in all files, according to the pattern Copyright (c) 2023-2025 Orange. All rights reserved. (with 2025 replaced by current year).

The copyright notice must be manually changed in few files, where it is hard-coded:

• licence and release notes
  • LICENSE
  • packaging/common/khiops/README.txt
• installer
  • packaging/windows/nsis/khiops.nsi
• tools, using '#define _COPYRIGHT_LABEL ..." in files Version.h
  • khiops: src/Learning/KWUtils/KWKhiopsVersion.h
  • genum: src/Learning/genum/Version.h
  • khisto: src/Learning/khisto/Version.h
  • _khiopsgetprocnumber: src/Norm/_khiopsgetprocnumber/Version.h
  • genere: src/Norm/genere/Version.h

Otherwise, the update is automatic:

• scripts/update-copyright.py: to update all source files during the the pre-commit
• src/Norm/genere/TableGenerator.cpp: to generate the correct copyright notice in the GUI genere tool

Just force a pre-commit using pre-commit run --all-files to update the copyright in all the source files.