Azure pipelines is too slow

[mratsim]

2 hours and still no machine to run tests

Unfortunately some are absolutely needed for 32-bit test

[mratsim]

83 sets up Github Actions, the waiting queue are per repo which avoids being clogged by other repos under the Status organization.

It also tests on Linux 32-bit and Windows 32-bit which was previously only tested on Azure and Appveyor (which is sometimes slow as well).

Hence we have now fallbacks when a service is too slow.