Add SPIRV-Tools optimizer files for linker
Add SPIRV-Tools optimizer files for linker

TODO: add the linker tool and library file.

dneto0/shaderc,antiagainst/shaderc,antiagainst/shaderc,antiagainst/shaderc,antiagainst/shaderc,dneto0/shaderc,dneto0/shaderc,dneto0/shaderc