New rendersystemvulkan & vfx_vulkan [hack] don't deal with instancing on SboxVertex for now, need some additional code around input layouts GetShaderFullPath: remove shader replacements and legacy prefix substitutes Shader fixes where DXC is slightly less forgiving on bad syntax (has a bad hack for material api in it) Rip up Material API to get it compiling Shader resource v2 has optional dx11 and vulkan blocks, if a block doesn't exist will use fallback shader