[GIE] Support 'ALL_V_E' option in 'ExpandPath' operator

**Describe the solution you'd like**

```bash
>>> g.V().both("1..3", "knows").with('RESULT_OPT', 'ALL_V_E')
>>> # results such as https://tinkerpop.apache.org/docs/current/reference/#path-step
[v[1],e[8][1-knows->4],v[4],e[10][4-created->5],v[5]]
```
