implement package io5 #3563

Job	Run time
Prepare CodeQL unit test matrix	5s
Run unit tests (cpp, 2.19.4, codeql-cli/v2.19.4, codeql-bundle-v2.19.4, ubuntu-latest-xl, codeql-...	1h 40m 18s
Run unit tests (c, 2.19.4, codeql-cli/v2.19.4, codeql-bundle-v2.19.4, ubuntu-latest-xl, codeql-cl...	36m 44s
Validate test results	5s
	2h 17m 12s

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