Convert typedef to using where possible

[walbourn]

Still have some lingering C style typdef. Should use C++ style using instead.

[john-h-k]

looks pretty trivial, can I take this? 😄

[walbourn]

using is better for simple alias names like:

using XMVECTOR = __m128;

It cannot be used however to define const versions of types like:

typedef const XMVECTOR& HXMVECTOR;

So in the end I just cleaned up some of the typedef usage.

[walbourn]

Fixed in this commit