multi: specify start and end height for ListTransactionDetails

Add start and end height parameters to the rpc and cli GetTransactions
endpoints. Default to returning all transactions from genesis to tip,
including unconfirmed transactions to maintain backwards compatibility.

lnwallet/interface.go

@@ -199,8 +199,14 @@ type WalletController interface {
 	ListUnspentWitness(minconfirms, maxconfirms int32) ([]*Utxo, error)
 
 	// ListTransactionDetails returns a list of all transactions which are
-	// relevant to the wallet.
-	ListTransactionDetails() ([]*TransactionDetail, error)
+	// relevant to the wallet over [startHeight;endHeight]. If start height
+	// is greater than end height, the transactions will be retrieved in
+	// reverse order. To include unconfirmed transactions, endHeight should
+	// be set to the special value -1. This will return transactions from
+	// the tip of the chain until the start height (inclusive) and
+	// unconfirmed transactions.
+	ListTransactionDetails(startHeight,
+		endHeight int32) ([]*TransactionDetail, error)
 
 	// LockOutpoint marks an outpoint as locked meaning it will no longer
 	// be deemed as eligible for coin selection. Locking outputs are