channeldb: final htlc resolution storage opt-in

sample-lnd.conf

@@ -315,6 +315,9 @@
 ; settled payments.
 ; keep-failed-payment-attempts=false
 
+; Persistently store the final resolution of incoming htlcs.
+; store-final-htlc-resolutions=false
+
 ; The default max_htlc applied when opening or accepting channels. This value
 ; limits the number of concurrent HTLCs that the remote party can add to the
 ; commitment. The maximum possible value is 483.