[CLI Feature] Testnet Explorer

It would be nice to have a visual tool to track testnet performance instead of just Grafana. It could include the list of active/incactive nodes (with uptime, voting power and detailed statitics on blocks produced/confirmed), stats for each one, blocks produced, transactions performed, etc.

The following resources can be used for inspiration:
https://cosmos.bigdipper.live/
https://hubble.figment.network/cosmos/chains/cosmoshub-2