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/internal/config/config.go

@@ -24,6 +24,7 @@ type Config struct {
 	LogLevel              int
 	MinRelayFee           uint64
 	RoundLifetime         int64
+	ExitDelay             int64
 }
 
 var (
@@ -40,6 +41,7 @@ var (
 	Network               = "NETWORK"
 	MinRelayFee           = "MIN_RELAY_FEE"
 	RoundLifetime         = "ROUND_LIFETIME"
+	ExitDelay             = "EXIT_DELAY"
 
 	defaultDatadir               = common.AppDataDir("arkd", false)
 	defaultRoundInterval         = 10
@@ -53,6 +55,7 @@ var (
 	defaultLogLevel              = 5
 	defaultMinRelayFee           = 30
 	defaultRoundLifetime         = 512
+	defaultExitDelay             = 512
 )
 
 func LoadConfig() (*Config, error) {
@@ -71,6 +74,7 @@ func LoadConfig() (*Config, error) {
 	viper.SetDefault(Network, defaultNetwork)
 	viper.SetDefault(RoundLifetime, defaultRoundLifetime)
 	viper.SetDefault(MinRelayFee, defaultMinRelayFee)
+	viper.SetDefault(ExitDelay, defaultExitDelay)
 
 	net, err := getNetwork()
 	if err != nil {
@@ -95,6 +99,7 @@ func LoadConfig() (*Config, error) {
 		Network:               net,
 		MinRelayFee:           viper.GetUint64(MinRelayFee),
 		RoundLifetime:         viper.GetInt64(RoundLifetime),
+		ExitDelay:             viper.GetInt64(ExitDelay),
 	}, nil
 }