Delay unilateral exit and support send to onchain address (#117)

* add delay on redeem close + forfeit close

* increase default round lifetime (16 minutes min)

* add sequence to final pset

* update CLI and server to support delayed vtxos oncahin

* rename future to "locked"

* add configurable EXIT_DELAY variable

* renaming

* rename "close" --> "closure"

* rename "close" to "closure"

* error message config.go

server/cmd/arkd/main.go

@@ -37,6 +37,12 @@ func main() {
 		log.Infof("round lifetime must be a multiple of 512, %d -> %d", setLifetime, cfg.RoundLifetime)
 	}
 
+	if cfg.ExitDelay%512 != 0 {
+		setExitDelay := cfg.ExitDelay
+		cfg.ExitDelay = cfg.ExitDelay - (cfg.ExitDelay % 512)
+		log.Infof("exit delay must be a multiple of 512, %d -> %d", setExitDelay, cfg.ExitDelay)
+	}
+
 	appConfig := &appconfig.Config{
 		DbType:                cfg.DbType,
 		DbDir:                 cfg.DbDir,
@@ -48,6 +54,7 @@ func main() {
 		WalletAddr:            cfg.WalletAddr,
 		MinRelayFee:           cfg.MinRelayFee,
 		RoundLifetime:         cfg.RoundLifetime,
+		ExitDelay:             cfg.ExitDelay,
 	}
 	svc, err := grpcservice.NewService(svcConfig, appConfig)
 	if err != nil {