[ADP-3414] Optimize benchmark history tracking

[paolino]

This PR refactors and improve buildkite lib.

• Introduces a LimitsLock object to avoid 429 when the 200 API calls per minute are surpassed.
• Factor out code from the benchmark-history exe into the buildkite lib

I also compute the benchmark history incrementally, by adding new data points to the last checkpoint

• Exposes the csv database of benchmarks for further reuse
• Catch that csv while collecting new benchmark results, stopping the collection there and simply amending it

[HeinrichApfelmus]

Awesome, thank you! 😊 Minuscule comments.

I have to admit that I don't understand the interleaving between Stream and IO very well, but the code seems to work, so that's alright.