Expose platform-specific process file descriptors #169

Job	Run time
Test / Windows (6.1 - windows-2022)	7m 22s
CMake Build	53s
Test / Windows (nightly-main - windows-2022)	16m 41s
Test / macOS (Xcode 16.3 - sequoia - ARM64)	1m 7s
Test / Linux (6.1 - jammy)	1m 16s
Test / Linux (nightly-main - jammy)	1m 31s
Test / Linux (6.1 - focal)	1m 12s
Test / Linux (6.1 - rhel-ubi9)	1m 14s
Test / Linux (6.1 - noble)	1m 11s
Test / Linux (nightly-main - rhel-ubi9)	1m 43s
Test / Linux (nightly-main - focal)	1m 31s
Test / Linux (nightly-main - noble)	1m 40s
Soundness / License headers check	5s
Soundness / Broken symlinks check	5s
Soundness / Python lint check	8s
Soundness / Shell check	34s
Soundness / YAML lint check	6s
Soundness / Format check	0s
Soundness / API breakage check	0s
Soundness / Documentation check	0s
Soundness / Unacceptable language check	0s
	38m 19s

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