fix: all pkg is useless, contract customer

app/api/service/button.go

@@ -52,3 +52,13 @@ func (b *Button) UpgradeButton(link string) []*response.Button {
 		},
 	}
 }
+
+func (b *Button) ContractCustomer() []*response.Button {
+	return []*response.Button{
+		{
+			Text: b.param.Str(config.ServiceContactCustomer),
+			Url:  b.param.Str(config.ServiceVipExpireUrl),
+			Type: config.ButtonClick,
+		},
+	}
+}