Track DIPS gas metrics in csv

[incrypto32]

[leoyvens]

Lets use object-store, instead of cloud-storage, it supports multiple cloud providers and very importantly supports local files.

[leoyvens]

What if we left GasMetrics as it was, since those Prometheus metrics may be useful for other purposes. And then added this new collector under the BlockState? From a Rust ownership perspective it may be nicer, we may be able to avoid the locks, and have flush_metrics_to_store consume self, such that fn reset_counters wouldn't be necessary.

[leoyvens]

I don't know if one file per block will be ok or not, but we can move forward with this and evaluate after testing a bit in real-life scenarios.