sentry + airflow performance monitoring

### Problem Statement

I configured TRACES_SAMPLE_RATE env var for airflow, and can see basic airflow performance data in sentry

However, I do not see performance data for my DAGs - their performance is much more important to me than core airflow's.

I would like to analyze performance of my DAGs and their Tasks in Sentry.

### Solution Brainstorm

Perhaps the solution building blocks are already there but the documentation is lacking? Maybe it's just a matter of extending the documentation for airflow integration on how to extend a DAG with sentry configuration? If so, then I would appreciate a code sample, maybe hello world extended with sentry code configured to generate traces for DAGs and their Tasks.

If not, maybe there needs to be an airflow plugin built to make it easy for DAG maintainers to plug-in observability.