On first ks use, ask user if he wants to have a backup strategy
ks <cmd>
Oh! I see you don't have any backup strategy!
Be carefull you are responsible for you secrets.
Keystone helps you to share secrets, not to restore if you loose them.
You can set a default backup strategy.
It will backup your projects secrets in `~/.config/keystone/backup` folder.
Do you want a default basic backup stragegy? y/n
n => No problem, keep it mind to setup one later!
y=> backup folder? (~/.config/keystone/backup)
On first ks use, ask user if he wants to have a backup strategy
~/.config/keystone.yamluser choice