Simple pure Rust AWS S3 Client for Phala network's pink environment.
```rust
use pink_s3 as s3;
let endpoint = "s3.ap-southeast-1.amazonaws.com";
let region = "ap-southeast-1";
let accesskey = "
let s3 = s3::S3::new(endpoint, region, accesskey, secretkey) .unwrap() .virtualhostmode(); // virtual host mode is required for newly created AWS S3 buckets.
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() as u64);
let v = s3.get(bucket, objectkey).unwrap(); asserteq!(v, value);
s3.delete(bucket, object_key).unwrap();
```