feat: add binary to benchmark TPS

[SantiagoPittella]

Partially address #1989

THis PR introduces a new binary to run benchmarks against the Miden node: miden-benchmark. It is split in two subcommands:

• create-proofs: which generates proofs and stores them in a file.
• run-benchmark: that reads the proofs file, submits them to the node and generates a report of the result.

Along with the new binary, this PR also introduces a small change in the block producer configurations by batch_workers configurable.

Note

Currently it won't work against the deployed against the deployed networks due to a change in the protobuf definition of SyncMmr.

Note

Generating 2k transaction (1k mint 1k consume) takes a bit over an hour in a Macbook M4 Max.

In the README of the new binary I added a section about how to start up the block producer with some parameters changes to increase the limit of TPS imposed by the node: TX PER BATCH * BATCHES PER BLOCK / INTERVAL PER BLOCK. At the moment of posting this and with the node's configuration from the README, I didn't reached the limit of TPS yet, though I never sent more than 1k transactions at a time (because the mint transaction are submitted sequentially).

The next steps are to:

• Increase the pool of transaction types used;
• Reach the max TPS limit;
• Try this with testnet's database.