feat: support test-groups #4503

Job	Run time
Linters (mypy, flake8, etc.)	56s
Get qemu emulated architectures	9s
Test cibuildwheel building pyodide wheels	1m 40s
Test on ubuntu-latest (3.13)	6m 3s
Test on windows-latest (3.13)	5m 48s
Test on macos-13 (3.13)	6m 3s
Test on macos-14 (3.13)	5m 48s
Test on ubuntu-latest (3.8)	6m 4s
Test Linux aarch64 using qemu	26m 27s
Test Linux armv7l using qemu	9m 12s
Test Linux ppc64le using qemu	17m 40s
Test Linux s390x using qemu	19m 56s
	1h 45m 46s

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