random-walk

Is your feature request related to a problem? Please describe.
Even after the useful PR GeomScale/volesti#190 some examples are still failing to compile.

Describe the solution you'd like
Some have an easy fix e.g. vpolytope-volume while some other e.g. EnvelopeProblemSOS need some work to fix the cmake (at least in my Ubuntu 20.04 with gcc version `9.3

To address the challenges that come along with the metabolic network reconstruction process,
the metabolic modeling community has adopted the Systems Biology Markup Language (SBML)
to a great extent.

Therefore, most metabolic models are in a .xml format and this is the reason that supporting
this format would benefit dingo the most.

To this end, dingo could make use of the [`li