libSceVideoNativeExtEssential technical debt

sceVideoNativeExtEssential_CreateDecInstance, sceVideoNativeExtEssential_DestroyDecInstance, sceVideoNativeExtEssential_Finalize, sceVideoNativeExtEssential_Initialize and sceVideoNativeExtEssential_IsInit (libSceVideoNativeExtEssential) - names and NIDs are present in the PS5 3.20 export inventory, but no credible prototypes were found. The declarations have no parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified