JSON Escape/Unescape

[MadGhigno]

Adding a function to JSON escape and un-escape a string would be useful insert it as a value in a json document

[sharevb]

Hi @MadGhigno some tools in my fork: https://sharevb-it-tools.vercel.app/json-escaper

And if you are interested in an up to date version of it-tools, with many improvements, new tools, and bug fixes, as this repo is almost no more maintained, I made a fork here : https://github.com/sharevb/it-tools (https://sharevb-it-tools.vercel.app/ and docker images https://github.com/sharevb/it-tools/pkgs/container/it-tools)