json : check '!!' in commands

[Manu1400]

Idea rule :
In package.json file(s), the commands in scripts can't be having !!

See https://tldp.org/LDP/GNU-Linux-Tools-Summary/html/x1712.htm

[Manu1400]

exception: "//": " --- GENERAL ---",
ie: https://gist.github.com/adamreisnz/9edf1f48e19c104b81f8102a27de0940