Create instance methods for Vulkan handles omitting the instance parameter

# Summary of feature
Generation of a type which, taking an `Instance` or `Device` handle, provides (possibly lazy) overloads of various vulkan functions which omit the `Instance` or `Device` handle implemented through the function pointers returned by `vkGetInstanceProcAddr` and `vkGetDeviceProcAddr`.

# Comments
C/C++ projects using vulkan can use [volk](https://github.com/zeux/volk) to achieve this same result.