feat: support test-groups (#2063) #4519

Job	Run time
Linters (mypy, flake8, etc.)	1m 40s
Get qemu emulated architectures	11s
Test cibuildwheel building pyodide wheels	5m 31s
Test on ubuntu-latest (3.13)	40m 11s
Test on windows-latest (3.13)	46m 47s
Test on macos-13 (3.13)	17m 12s
Test on macos-14 (3.13)	13m 44s
Test on ubuntu-latest (3.8)	41m 9s
Test Linux aarch64 using qemu	26m 0s
Test Linux armv7l using qemu	9m 7s
Test Linux ppc64le using qemu	17m 32s
Test Linux s390x using qemu	19m 40s
	3h 58m 44s

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