Step to configure tracePropagationTargets

[Lms24]

As discussed internally, as a follow-up to @whitep4nth3r's Nuxt stream, we want to add a wizard step to configure one of the most critical points for distributed tracing: Setting up tracePropagationTargets.

Such a step could ask users for domains their app will send requests to and add them to the tracePropagationTargets array. Ideally, we construct a RegExp for these, to avoid attaching headers to GA or other requests where URLs are mentioned in query params.