GDTF Version

[jordan-walters]

Is your feature request related to a problem? Please describe.
We have example MVR files containing a mix of GDTF files created using GDTF version 1.1 and 1.2.

Describe the solution you'd like
We would like a function call added to libMVRgdtf library to return the GDTF version of the gdtf file - as 3 separate ints (reference parameters) for major, minor and revision [preferable], or as a string "maj.min.rev" [less preferred].

Describe alternatives you've considered
Loading the description.xml myself and parsing the GDTF Version directly.

Additional context