Hi RK G,
No we do not have any adapter which can directly run CPP based test frameworks similar to what we have for Selenium Based Junit Test Scripts.
However, if you want, you could make use of command line adapter to run Command Line Scripts.
But in that case how are you going to define test script boundary via command line scripts, it would depend on the command line script implementation.
In your case you may have to create one test script in RQM for each of the command line scripts each one of which representing one CPP script.
Those scripts can be added in to a RQM test case and then those test case can be run to execute your CPP based scripts via a Command Line interface script.
So in short for each CPP script there would be a command line script and one rqm based test script.
If that works for you, you could give it a try.
Please let us know if you need more help in this regard.