[License] update idb interface

[shiqizng]

1. update ValidatedBlock definition in types.go to

type ValidatedBlock struct {
	Block sdk.Block
	Delta models.LedgerStateDelta
}

2. update AddBlock(block *ledgercore.ValidatedBlock) error to AddBlock(block *types.ValidatedBlock) error - this will break all the code in idb that's using ledgercore.StateDelta.
3. update block types to types.ValidatedBlock in integration tests