Prepare v0.6.0 for CRAN

Validation

• [ ] New version on CRAN
• [ ] New tag on GitHub : v0.6.0

Tech

• [x] Passer en 0.6.0
• [ ] Wait for {lightparser} to be released on CRAN : https://github.com/ThinkR-open/lightparser/issues/2
• [ ] Suivre les consignes dev_history + Prepare for CRAN: https://github.com/ThinkR-open/prepare-for-cran
• [ ] Merge on 'main'
• [ ] Tag on 'main'
• [ ] Set back dev version