Release 3.0.0

This is a quite big release. I decided to rewrite the entire script in python. There is multiple reasons behind this language change :

• Make development of future features easier
• Allow the development of way more complexe features
• Improve the maintainability of the script
• Make it easier for people to contribute to the script if they want to

There are also some new little features in addition as well :

• Add GRUB_DISABLE_OS_PROBER=false to the GRUB config
• Add GRUB save default option to the GRUB config
• Optimizing a bit how packages existence is checked
• Remove exfatprogs packages for main file systems support bundle
• Add a computed default value for the swapfile size in manual partitioning

I hope you'll enjoy this release.