Modify game capture shared textures to be typeless if they could
potentially need SRGB and non-SRGB views in the future.
These capture APIs have been updated: D3D 10/11/12, Vulkan.
D3D8 capture does not use shared textures.
D3D9 and GL interop do not support typeless textures.
The new game capture DLL should be compatible with old versions of OBS.
Also removed a lot of dead code around pointless SRV/RTV support.
535f6b0adc