Simple pure Rust AWS S3 Client for Phala network's pink environment.
```rust use pink_s3 as s3;
let endpoint = "https://s3.ap-southeast-1.amazonaws.com";
let region = "ap-southeast-1";
let accesskey =
let s3 = s3::S3::new(endpoint, region, accesskey, secretkey).unwrap();
let bucket = "my-wallet"; let object_key = "path/to/foo"; let value = b"bar";
s3.put(bucket, object_key, value).unwrap();
let head = s3.head(bucket, objectkey).unwrap(); asserteq!(head.content_length, value.len());
let v = s3.get(bucket, objectkey).unwrap(); asserteq!(v, value);
s3.delete(bucket, object_key).unwrap(),
```