Spoof any Vulkan extension

[tomboylover93]

I've been trying to play Doom: The Dark Ages on my RX 5500XT on Linux using software RT emulation with RADV_PERFTEST=rt,emulate_rt %command% (stupid idea, I know, but it should work). Since Update 2 it does not work however, not due to RT or lack thereof but because Variable Rate Shading is now available on the PC version and that requires the VK_KHR_fragment_shading_rate extension which RDNA1 does not support. Apparently it can be disabled if you don't want to use it but that extension is required to launch the game in the first place.

Since OptiScaler already spoofs Nvidia Vulkan extensions with VulkanExtensionSpoofing, I was wondering if it would be possible to make a similar setting that spoofs all extensions on a list separated by commas. Example:
Foo=VK_KHR_fragment_shading_rate,VK_KHR_video_decode_vp9.