Create helper function to wrap subprocess.run

[dafyddstephenson]

Currently, the following pattern:

        sp_cmd = 'echo 'Hello World"'
        sp_run = subprocess.run(sp_cmd, shell=True, text=True, capture_output=True)
        if sp_run.returncode != 0:
            raise RuntimeError(f"Command {sp_cmd} failed: {sp_run.stderr.strip()}")
        hw = sp_run.stdout.strip()

Can be found all over the place in C-Star.
It would be fairly straightforward to wrap this behaviour in a helper function, reducing each such block to, e.g.:

hw = run_subprocess('echo "Hello World"')

[github-actions]

This issue has been linked to Jira story CW-592.