SimuJobTransforms: Adding support for PerfMonMT in CA-based simulation jobs

This MR will enable us to start using PerfMonMT in the CA-based simulation jobs (by default the so-called fastmonmt). This should be treated as a prototype and we can/will probably polish things up as we go. Once this MR goes into the branch, we'll setup a daily SPOT test that runs CA-based ITk simulation that was requested by @nstyles a while back. Let me tag @jchapman and @tadej.