Show user clicks as events in session replay

[MikeShi42]

We've gotten feedback that being able to see the user's clicks as an explicit event in the sidebar of our replay would be helpful to follow along in the session.

This is quite similar to other products such as Fullstory where user interactions are shown as a discrete event. We currently have user interaction information via otel (NPM package) and we technically have them in the replay data as well, but preferably we can pull it via spans (our existing events are derived from spans, and we anticipate changing how the replay data is loaded in the future which can complicate this issue)