FindVulkan: Add components for `shaderc`, `SPIRV-Tools` and `glslang`

This MR fixes #23438 (closed) by improving FindVulkan.cmake CMake modules allowing to reference more of the Vulkan SDK content.

Namely, it exposes as Vulkan package components:

• shaderc_combined static library, exposed with Vulkan::shaderc-combined target
• SPIRV-Tools static library, exposed with Vulkan::SPIRV-Tools target
• glslang static library, exposed with Vulkan::glslang target

Code also deal with a couple of requirement for those to work properly:

• Handle the debug library for some targets if they exists
• Handle intermediate libraries required for linking
• Handle dependent package when necessary (e.g. shaderc-combined depends on pthread)

Fixes: #23438 (closed)

EDIT: glslang is not included anymore as it can lead to linker error on Windows due to incompatible MSRC Runtime Library. glslang installed by default with the Vulkan SDK has been compiled with MultiThreadedDLL, whereas the default behavior when compiling code with CMake in Debug config uses MultiThreadedDLLDebug leading to the linker error. It is possible to optionally install a debug glslang library with the Vulkan SDK but as it is not done by default, users may run into this error often and without a clear clue on how to solve it.