feat: CIBW_TEST_SKIP

[henryiii]

Addressing #529 (no universal yet, but that can be added when #484 is in). Just a SKIP, since that seemed to be the consensus? Without the ! syntax in BUILD I guess only SKIP makes sense (though it is very easy to add).

[joerick]

Looks good, nice and simple. Just the docs to go, I think :)

[henryiii]

Docs are ready for review too. ;)

[joerick]

Thanks @henryiii , this looks good!

Just one thing before merge, could you update the options table in the README with this new option?

(A tip - if you open the JS console on the options page e.g. https://cibuildwheel--537.org.readthedocs.build/en/537/options/ , generated README markdown can be copied from there! Kinda weird I know but that was how it was created the first time :) )

[YannickJadoul]

https://cibuildwheel--537.org.readthedocs.build/en/537/options/

Huh? There's a dedicated docs page of each PR? I never knew about this! Did you perform any dark magic to get this? :-O

[henryiii]

Click on the "readthedocs" "check" and it opens the docs for the PR itself, wow. :)

[YannickJadoul]

Oh, right. Seems I need to read up on this: https://docs.readthedocs.io/en/stable/guides/autobuild-docs-for-pull-requests.html :-)

[YannickJadoul]

Of course. I should not read my emails/notifications in random order ;-) #550 (comment)