GitLab

* Added CodeQL and Bandit security checks as GitHub Actions

* Nit fix on defusedxml.ElementTree

* Remove defusedxml as hard requirement

* Changed diffusedxml/xml importing

* Fix compilation

* Removed Bandit specific changes
Co-authored-by: Nikita Shulga <nikita.shulga@gmail.com>
Co-authored-by: Nicolas Hug <nicolashug@fb.com>
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>