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

This is a continuation of the review: https://reviews.llvm.org/D100182
This patch implements the OMPD API as specified in the standard doc.

Reviewed By: @hbae
Differential Revision: https://reviews.llvm.org/D100183

GitOrigin-RevId: 62fddd5ff5cdd5d66a58a01c46dc58c8ca9cd62e
3 files changed