[DevToys 2.0] Added JsonToYaml Converter (#925)
* added JsonToYamlConverter
* Fixed multiple bugs
* Fixed an issue where IUISetting Handle method won't update the UI if a setting has changed.
* added command line tool and unit tests
* Fixed bug in Monaco editor
* updated following comments
* updated translation for json yaml converter
* Removed whitespace
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Co-authored-by: Etienne Baudoux <ebaudoux@velersoftware.com>
