Tests silently skipped in CI on Windows and macOS environment

[Neo-Zhixing]

Turns out the GitHub actions Windows and macOS environment does not have Vulkan installed. That make sense - macOS don't generally have MoltenVK installed.

vulkano/vulkano/src/tests.rs

Line 19 in 741a506

Err(_) => return,

Right now during tests, if we fail to load the vulkan library, or if instance creation fails for any reason, it simply returns from the test and mark it as success.

We should probably figure out a way to install Vulkan environment on Windows & macOS.

#1841 (comment)
#1876 (comment)

[Rua]

Pinging @AustinJ235 who commented on the issue previously.