Set contents: read permissions on every workflow and add per-workflow
concurrency groups keyed on the git ref to deduplicate concurrent runs.
Release workflow keeps cancel-in-progress: false so a release build is
never canceled; job-level contents: write on attach-to-release is
preserved. Concurrency groups use hardcoded prefixes so reusable
workflows called from release.yml do not inherit the caller workflow
name and collide.
* disabling LTO when building the profiler on macos via the github workflow
* diagnosing where in the linking stage it's getting stuck
* fowrward declarations
* compilation time report
* trying clang build analyzer...
* reducing number of parallel workers
* limiting parallel workers on windows/linux as well
* re-enabling LTO on macos
* reverting forward declaration header include (emscripten is failing with them).
* reverting act changes
* removing comments
