Combine opendal with s3s

[Nugine]

An object storage can use s3s to export S3-compatible REST API. And recently I came across opendal (this repo).

So I'm thinking: Would it be easy to combine opendal with s3s? Then we can operate many storage backends with existing S3 clients.

[Xuanwo]

Integrate with opendal should be easy. I'm willing to help implement any missing features.

I take a quick look on s3s-fs, and only find copy is not implemented.