[PATCH 0/3] MR5578: Draft: msvcp140_atomic_wait: Partially implement __std_tzdb functions.

[Aida Jonikienė (＠DodoGTA)]

OpenImageViewer requires all of these functions for the file information menu to work.

This implementation references the open-source (Apache 2.0) STL code: https://github.com/microsoft/STL/blob/main/stl/src/tzdb.cpp