wined3d: support direct3d shader model 1,2,3 for vulkan backend
vkd3d_shader_compile_info::source_type can not hard write to VKD3D_SHADER_SOURCE_DXBC_TPF, it is decided by magic number of shader source.
vkd3d_shader_compile_info::source_type can not hard write to VKD3D_SHADER_SOURCE_DXBC_TPF, it is decided by magic number of shader source.