feat: add history helper

history/helper.go

@@ -38,3 +38,7 @@ func (h *History) Iss(issuer string) *History {
 	h.Issuer = issuer
 	return h
 }
+func (h *History) Grp(grp string) *History {
+	h.Group = grp
+	return h
+}

history/history.go

@@ -29,6 +29,7 @@ type History struct {
 	Message string
 	Body    interface{} `gorm:"-"`
 	Issuer  string
+	Group   string
 
 	BodyJson string
 }