[OpenMP][OMPD] Implementation of OMPD debugging library - libompd.

This is a continuation of the review: https://reviews.llvm.org/D100183
It contains routines that retrieve OpenMP ICV values for OMPD.

Reviewed By: @hbae
Differential Revision: https://reviews.llvm.org/D100184

GitOrigin-RevId: b0277bef9739d5e3a3feb89ff9c1aaa90a801ee0
3 files changed