[CMAKE] Add CMake script to find or fetch Microsoft.GSL - #3521

[CMAKE] Add CMake script to find or fetch Microsoft.GSL #3521

marcalff merged 6 commits into

open-telemetry:mainopen-telemetry/opentelemetry-cpp:mainfrom

dbarker:cmake_find_or_fetch_ms_gsldbarker/opentelemetry-cpp:cmake_find_or_fetch_ms_gslCopy head branch name to clipboard