Update boostx stats command to include agent version & retrieval support breakdown

[jacobheun]

Summary

We want to better monitor adoption of Boost as well as the various retrieval protocols (graphsync, bitswap, http) so we can better support SPs.

Proposal

Collect libp2p agent version

The libp2p agent versions should give us a better understanding of who is using lotus/venus/boost/etc and what version adoption of Boost looks like. We already run identify to get the protocols, so we just need to track the agent versions.

This could just be a simple map counter we print out.

Collect supported retrieval protocols

#723 added support for checking supported retrieval protocols over libp2p. We should run this check to see which protocols each SP supports as we crawl the network.

Example existing output

...
Total Boost nodes: 309
Total Boost raw power: 673768287275843584
Total Boost quality adj power: 2497977391189557248
Total Lotus Markets nodes: 591
Total SPs with minimum power:  3588
Total Indexer nodes: 721

Example updated output

...
Total Boost nodes: 309
Total Boost raw power: 673768287275843584
Total Boost quality adj power: 2497977391189557248
Total Lotus Markets nodes: 591
Total SPs with minimum power:  3588
Total Indexer nodes: 721
Retrieval Protocol Support:
  graphsync: 309
  http: 25
  bitswap: 19
Agent Versions:
  boost/1.6.0: 250
  boost/1.6.1-rc1: 10
  lotus/1.20.3: 489
  otherversionhere: x
  ...