Update cmdValidateBfTx and cmdDeliverTx with new functions. In cmdDeliverTx, it signs the bf_tx and store that bf_tx in DB
Update cmdValidateBfTx and cmdDeliverTx with new functions. In cmdDeliverTx, it signs the bf_tx and store that bf_tx in DB

blockfreight/go-bftx,blockfreight/blockfreight-alpha,blockfreight/go-bftx