Utilize shellCommand in the run code lens

[ckipp01]

Task

I totally missed how this was working, but now that we have shellCommand available to use in the run code lens we actually don't need to go through the entire DAP stuff. We can instead just take that command and.... run it. We can determine if we still want to run it in the DAP terminal or just in :term, but this should be way faster than spinning up a DAP server.