Unit Testing with `google/swiftshader` in CI/CD environment

[Snowapril]

It is hard to test full vulkan features in CI/CD environment.
We can use vk_swiftshader_icd.json to reproduce unit-testing with CPU-based implementation of the Vulkan graphics.

reference

• https://github.com/google/filament/blob/main/BUILDING.md#swiftshader
• https://github.com/KhronosGroup/Vulkan-Loader/blob/master/docs/LoaderInterfaceArchitecture.md
• https://swiftshader.googlesource.com/SwiftShader