docs: add instructions for codex on windows #526

Job	Run time
Tests on ubuntu-latest with node 22	1m 3s
Tests on windows-latest with node 22	2m 2s
Tests on ubuntu-latest with node 24	55s
Tests on macos-latest with node 20	1m 32s
Tests on windows-latest with node 24	2m 25s
Tests on windows-latest with node 23	2m 19s
Tests on ubuntu-latest with node 20	51s
Tests on ubuntu-latest with node 23	56s
Tests on macos-latest with node 22	1m 38s
Tests on windows-latest with node 20	2m 31s
Tests on macos-latest with node 23	1m 32s
Tests on macos-latest with node 24	1m 17s
[Required] Tests passed	2s
	19m 3s

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