REPLAY-1765 Add records count session replay stats

[maciejburda]

What and why?

Adds SR records count to RUM view events.

How?

Using message bus and passing the info from SR to RUM.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• Run unit tests
• Run integration tests
• Run smoke tests

[datadog-datadog-prod-us1]

Datadog Report

Branch report: maciey/REPLAY-1765-replay-stats
Commit report: acd3713

✅ dd-sdk-ios: 0 Failed, 0 New Flaky, 2168 Passed, 0 Skipped, 6m 13.51s Wall Time

[ncreated]

I made a test in demo app, most views and actions do not have has_replay: true anymore (haven't tested other events).

[maciejburda]

@ncreated @maxep

I added updated the PR with update function.

We discussed with @maxep and we'll have a pairing session later this month to:

• allow nullifying values
• remove set and rely only on update

[ncreated]

🎯 Awesome. Please make sure it is tested manually before merge as we don't yet have RUM + SR integration tests.

[maciejburda]

Thanks for the review @ncreated

Tested locally and replayCount is there:
https://mobile-integration.datadoghq.com/rum/sessions?query=%40geo.country%3APortugal%20%40type%3Asession&cols=&event=AgAAAYkq3RBJzi5pswAAAAAAAAAYAAAAAEFZa3EzUkJKQUFBY0tpY21fdDdHck1TeQAAACQAAAAAMDE4OTJhZGQtMjIwZS00MWUxLWIzYzctZDhjYThjNzg0NzI5&p_tab=raw&saved-view-id=1949067&sort_by=time&sort_order=desc&viz=stream&from_ts=1688639728540&to_ts=1688641528540&live=true