Use pebble instead of goleveldb

[evan-forbes]

pebble has a meaningful impact on performance of things like the chainbuilder and even small differences in throughput. We should put forther the effort to use it as the default in the future. It would require existing nodes to resync the chain if they want to switch, however it should be backwards compatible and not critical.

[rach-id]

We just need to bump our dependency on cometbft-db from 0.7.0 to 1.0.1 or similar and see if it's not breaking anything