Add create user rest endpoint
diff --git a/core/kg/model/config.go b/core/kg/model/config.go
index fd8c034..cc556ff 100644
--- a/core/kg/model/config.go
+++ b/core/kg/model/config.go
@@ -17,6 +17,7 @@
 	SQL  SQLConfig
 	HTTP HTTPConfig
 	GRPC GRPCConfig
+	App  AppConfig
 }
 
 func NewConfig() *Config {
@@ -80,3 +81,15 @@
 		s.Port = defaultGRPCPort
 	}
 }
+
+type AppConfig struct {
+	EnableSignUp *bool
+}
+
+func (s *AppConfig) SetDefaults() {
+	if s.EnableSignUp == nil {
+		s.EnableSignUp = NewBool(true)
+	}
+}
+
+func NewBool(b bool) *bool { return &b }