* add experimental file history provider * Improve file history provider writes Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * typo * cleanup * cleanup * fix in readme * added security messages * Refine file history provider locking Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * added additional sample --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>