multi: extend InvoiceDB methods with a context argument (#8066)

* multi: extend InvoiceDB methods with a context argument

This commit adds a context to InvoiceDB's methods. Along this refactor
we also extend InvoiceRegistry methods with contexts where it makes
sense. This change is essential to be able to provide kvdb and sqldb
implementations for InvoiceDB.

* channeldb: restrict invoice tests to only use an InvoiceDB instance

* docs: update release notes for 0.18.0

contractcourt/channel_arbitrator.go

@@ -2,6 +2,7 @@ package contractcourt
 
 import (
 	"bytes"
+	"context"
 	"errors"
 	"fmt"
 	"math"
@@ -1885,7 +1886,7 @@ func (c *ChannelArbitrator) isPreimageAvailable(hash lntypes.Hash) (bool,
 	// than the invoice cltv delta. We don't want to go to chain only to
 	// have the incoming contest resolver decide that we don't want to
 	// settle this invoice.
-	invoice, err := c.cfg.Registry.LookupInvoice(hash)
+	invoice, err := c.cfg.Registry.LookupInvoice(context.Background(), hash)
 	switch err {
 	case nil:
 	case invoices.ErrInvoiceNotFound, invoices.ErrNoInvoicesCreated: