Feature Request: improve interoperability with ReFrame tests

[hagertnl]

One significant enhancement of the OTH could be to enable exporting a harness test to a rough ReFrame format (maybe that would need a few modifications -- something close would be good) and creating a harness test from a ReFrame test. This would allow us to more easily exchange tests with the broader community.

I envision this as a new binary like:

rgt_export_test.py --test <testname> --path-to-tests <path_to_tests> --destination <path_to_reframe_test>

This may or may not be feasible, we need to evaluate what we would have to do to achieve that type of functionality.