[I] Add Content-MD5 or checksum header for using an Object Locked S3 [arrow-rs-object-store]

["trueleo (via GitHub)" <gi...@apache.org>]

trueleo opened a new issue, #190:
URL: https://github.com/apache/arrow-rs-object-store/issues/190

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   I am trying to use object-store crate with AWS S3 where Object lock is enabled with versioning and some retention period. When i am trying to put object it is failing with following error 
   
   ``` 
   ... <Error><Code>InvalidRequest</Code><Message>Content-MD5 OR x-amz-checksum- HTTP header is required for Put Object requests with Object Lock parameters</Message> ...
   ```
   
   **Describe the solution you'd like**
   A ClientOptions method like `with_content_md5` or `with_checksum_header` that will calculate and attach appropriate checksum header ( before sending `Bytes` ) so that PUT request works.
   
   **Describe alternatives you've considered**
   None  
   
   **Additional context**
   This is minimal example I used for testing this out
   ```rust
   #[tokio::main]
   async fn main() {
       let client = AmazonS3Builder::new()
           .with_endpoint("https://s3.us-east-1.amazonaws.com")
           .with_access_key_id(".....")
           .with_secret_access_key(".....")
           .with_bucket_name("....")
           .with_region("us-east-1")
           .build()
           .unwrap();
   
       client
           .put(
               &Path::from("foo"),
               Bytes::from_static(b"content of file"),
           )
           .await
           .unwrap();
   }
   ```
   
   [second notes section in AWS docs only talks about Content-MD5](https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObject.html)
   
   


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