Add pyroscope extension

[lmangani]

Description

Experimental Pyroscope extension for continous profiling of DuckDB 👁️ compatibly with pprof backends such as Grafana Pyroscope and of course with our magic polyglot observability stack qryn

Usage

---- Start the tracer, requires backend URL
D SELECT * FROM trace_start('https://pyroscope:4000');

---- Do a bunch of quack-fu queries ...

---- Stop the tracer
D SELECT * FROM trace_stop();

Glory Shot in Pyroscope

Profiling data is streamed in realtime to the backend

[lmangani]

The builder test is not triggered. Is there something missing on our behalf?

[lmangani]

mmm yeah something must be wrong, the PR shows no conflicts without running any action test....

[samansmink]

Looks very cool! Thanks @lmangani

[lmangani]

Thanks @samansmink curious about your feedback from the nest! there's also a raw https://github.com/quackscience/duckdb-extension-pprof if you're interested in the raw files w/o the Pyroscope API in the middle. Not sure if we should release it - happy to hear your opinion. Sadly they cannot be merged in the same extension due to conflicts between the libraries in rust I couldn't resolve (yet).