Tracking issues of RFC-0423: Command Line Interface

- https://github.com/datafuselabs/opendal/pull/423

```shell
oli {cp,rm,ls,...}
ocp s3://abc azblob://def
orm s3://abc
ols s3://abc
```

## Todo List

We will implement a quick demo that only supports cp from local to remote.

- [x] Add a basic project layout
- [x] https://github.com/datafuselabs/opendal/issues/675

## Future

- [ ] Full cp support
- [x] mv
- [x] stat
- [x] cat
- [x] tee
- [x] rm
- [x] ls
- [ ] Progress bar

Start by reviewing RFC-0423 and the linked pull request 423, then inspect the existing CLI project layout referenced in the issue. Compare the current implementation with the unchecked Todo and Future items, especially full cp support and the progress bar. Done requires an explicitly selected scope to be implemented and its corresponding checklist item to be completed.

Written by the indexing model from the issue text.