data pre-processor: add to_json flag to jinja handler#575

ChanderG wants to merge 3 commits intofoundation-model-stack:mainfoundation-model-stack/fms-hf-tuning:mainfrom

ChanderG:feat-datahandler-json-outChanderG/fms-hf-tuning:feat-datahandler-json-outCopy head branch name to clipboard