NewMempoolParityCheckTx returns a new MempoolParityCheckTx handler.

NewMEVCheckTxHandler constructs a new CheckTxHandler instance.

MempoolParityCheckTx is a CheckTx function that evicts txs that are not in the app-side mempool on ReCheckTx.

MEVCheckTxHandler is a wrapper around baseapp's CheckTx method that allows us to verify bid transactions against the latest committed state.

BaseApp is an interface that allows us to call baseapp's CheckTx method as well as retrieve the latest committed state.

MEVLaneI defines the interface for the mev auction lane.