lromer22

### Relevant information relevant slack conversation about adding synthetics -> apm relationships: https://newrelic.slack.com/archives/CH5MLECNN/p1707488028157059?thread_ts=1707315248.292109&cid=CH5MLECNN This PR aims to add a candidate relationship for SyntheticsMonitor using the info from Transaction Event [example](https://staging.onenr.io/0dBj3gaJ6jX)...