Implement runWithContext

[szegedi]

What does this PR do?:

• Also adds a createContextHolder method to the profiler for direct use of custom contexts with AsyncLocalStorage.run()
• implements a TimeProfiler.runWithContext on top of it.

Motivation:
This can be used by dd-trace-js for implementing custom contexts

How to test the change?:
It comes with unit tests.

[github-actions]

Overall package size

Self size: 1.81 MB
Deduped: 2.18 MB
No deduping: 2.18 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | p-limit | 3.1.0 | 7.75 kB | 13.78 kB | | node-gyp-build | 3.9.0 | 8.81 kB | 8.81 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-02-17 11:30:12

Comparing candidate commit 705e5a3 in PR branch szegedi/run-with-context with baseline commit 889d79f in branch szegedi/acf-simple.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 90 metrics, 29 unstable metrics.

scenario:profiler-light-load-no-wall-profiler-22

• 🟥 cpu_user_time [+1.737ms; +7.235ms] or [+2.465%; +10.270%]

[IlyasShabi]

LGTM