【Hackathon 9th No.103】e3nn for paddle rfc

[BeingGod]

https://github.com/PaddlePaddle/community/blob/master/hackathon/hackathon_9th/%E3%80%90Hackathon_9th%E3%80%91%E4%B8%AA%E4%BA%BA%E6%8C%91%E6%88%98%E8%B5%9B%E2%80%94%E7%A7%91%E5%AD%A6%E8%AE%A1%E7%AE%97%E4%BB%BB%E5%8A%A1%E5%90%88%E9%9B%86.md#no103-%E5%9F%BA%E4%BA%8Epaddle%E5%AE%9E%E7%8E%B0%E7%AC%AC%E4%B8%89%E6%96%B9%E5%BA%93e3nn

[paddle-bot]

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[zhiminzhang0830]

LGTM