new feature: Implement SSH backend for opendal

[xyjixyjixyji]

Feature Description

With ssh backend, we can have an ofs equivalent for sshfs, which should be high performance and a useful usecase for opendal

Problem and Solution

N/A

Additional Context

No response

[Xuanwo]

We have discussed this before: #2643. Are they the same cases?

[xyjixyjixyji]

Yup i think they are duplicated, ty for reminding

[xyjixyjixyji]

After a deeper look i think it is not exactly the same. Scp is for single file transfer while ssh could be mulitple data transfer through a single connection.

[Xuanwo]

ssh could be mulitple data transfer through a single connection.

How does SSH transfer data?

[xyjixyjixyji]

ssh could be mulitple data transfer through a single connection.

How does SSH transfer data?

I think mainly use sftp, is there a way to support sshfs using sftp? I think we could move this in another discussion.