Check different OTel setups with POTel

[sentrivana]

Test different OTel setups with the new SDK to get a better feel of the OTel experience:

• OTel-instrumented app not instrumented by Sentry, is the Sentry span processor picking up spans and sending them to Sentry? If not, what setup is needed?
• Turning off tracing in the SDK, using OTel for tracing directly, are the errors from the SDK connected to the spans?

[smeubank]

just to add some flavor, the table below is maybe too much but let's imagine it's the goal nice to have. Content is totally made up, in terms of check marks, i just wanted a few examples

Framework / Library	Sentry SDK Support	OTel SDK Support	Error Support	Tracing Support	OTel Improves?	OOTB	Needs Extra Config
FastAPI	✅	✅	✅	✅	✅	✅	❌
Django	✅	✅	✅	✅	⚠️ Adds richer spans	✅	🔧 Middleware config
Celery	✅	✅	✅	✅	✅	❌	✅ Instrumentation setup
SQLAlchemy	✅	✅	❌	✅	✅	❌	✅ Hook into engine
Requests	✅	✅	❌	✅	⚠️ Adds net.peer info	✅	❌

[sentrivana]

Closing in favor of https://github.com/getsentry/sentry-python/issues/4658