Our minimum C++ version is C++17, which has std::filesystem, so ditch
the boost dependency and use the standard library instead. (this only
affects temp file creation in the QA suite anyway).
Bugs found but not fixed yet:
* Reference and Value are not converted correctly yet
* HOTFIX: test commented out
* GP3906-TLP and UBLOX_ZOE_M8-0-10 are not able to import the description again
* HOTFIX: description removed from gold file