add pkgs from core

registry/service.go

@@ -0,0 +1,20 @@
+package registry
+
+import (
+	"github.com/go-gost/core/service"
+)
+
+type serviceRegistry struct {
+	registry
+}
+
+func (r *serviceRegistry) Register(name string, v service.Service) error {
+	return r.registry.Register(name, v)
+}
+
+func (r *serviceRegistry) Get(name string) service.Service {
+	if v := r.registry.Get(name); v != nil {
+		return v.(service.Service)
+	}
+	return nil
+}