gjson now [supports @dig](https://github.com/tidwall/gjson/commit/e8e87f2a00dc41f3aba5631094e21f59a8cf8cbf), it would be great if we can set json using `sjson.Set(json, "@dig:key", "value")`.
gjson now supports @dig, it would be great if we can set json using
sjson.Set(json, "@dig:key", "value").