Please remove hardcodings of "definitions" in Jsons2Xsd and allow support for 2019_09 "$defs"

[anirbangangopadhyay]

Please remove hardcodings of "definitions" in Jsons2Xsd and allow support for 2019_09 "$defs"

Presently you have use constant JSON_DEFINITIONS which is not used properly everywhere like #/definitions which should be made to #/ + JSON_DEFINITIONS

Apart from this I propose you also support 2019_09 "$defs" and check for both if need be or allow uses to configure one or the other as input

Thanks in advance for doing this minor change quickly so that user dont have to hack or fork