abci,pg: start using height/hash in postgres, remove badger db in abci/info

[jchappelow]

We had intended to be checking height and hash of best block recorded in postgres, but that is not done.

Right now you can nuke your postgresql database, restart kwil, and it thinks the application is at the consensus/state/block height because your abci/info is persisted. This is incorrect.

In (*AbciApp) Info we need to read the best block height and hash from postgres (i think kwild_voting.state with columns height and hash would be just fine) so we can return that to cometbft so it starts replaying blocks.

[jchappelow]

I think we concluded the badger kv for abci is now basically useless, just error prone and redundant, @brennanjl , but I wanted to confirm before @charithabandi or anyone else takes the step of removing it.

[jchappelow]

Regarding the height check bug in this issue, it looks like we use getDBHeight and check height in GenesisInit but not in (*AbciApp) Info. I let a loud code comment sneak in https://github.com/kwilteam/kwil-db/pull/607/files#diff-eaaded10eb74f1d44ce5ad1bc9e5d15c4d7c902e7cc604e01bb6dfe7616b6441. When fixed we can remove that.

[jchappelow]

Resolved by #610