.NET header support

[cubiclesoft]

In before anyone decides to open a support request for .NET header parsing.

This library is mostly for PE file format parsing and manipulation. The .NET CLR header is extracted but not parsed at this time. It was hard enough getting the software to this point.

This craziness:

https://www.ntcore.com/files/dotnetformat.htm

Is yet another wall of text to digest and probably a separate class to actually handle. If anyone wants to tackle it, feel free.