ci: shard the tests on windows too

wheel: test the built wheel in the windows tests Same logic as Linux and Mac, we better test that what we build and ship works.

wheel: explicitly list built architecture This will help also build the ARM64 wheel once the dependencies are installed.

wheel: build Windows wheels too Again, cibuildwheels makes it very handy.

wheel: make --hg-wheel works on Windows There was this old outdated conditional that can simply receive our new needs… Incredibly, this is all that seems to be needed.

wheel: assign CIBW_SKIP globally The other cibuildwheels (e.g. windows) will needs it too.

windows: simply rely on the PATH adjustment to find python.exe in tests The shell script under a `.exe` name confused Windows outside MSYS and give us the following error: […]/python.exe is not compatible with the version of Windows you're running. Check your computer's system information and then contact the software publisher. This is necessary to get the wheel variant of the test run to work properly.

ci: adjust port range on windows too This will help having concurrency on the windows runner too.

windows: skip test-clonebundles-autogen.t in the CI This test is hanging the CI, so lets ignore it for now.

ci: split the windows runtest invocation into more granular variables This helps make things clearer and easier to adjust in sub jobs.