S3 checksum support for validating object integrity

[guymguym]

Environment info

• NooBaa Version: 5.17
• Platform: any

Actual behavior

1. See https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html.
2. We are missing support for checksum headers x-amz-checksum-mode, x-amz-sdk-checksum-algorithm, x-amz-checksum-XXX.
3. While we do support Content-MD5 and x-amz-content-sha256 (which is used to protect the signature), the new checsum headers were added to become persistent attributes of the object and retrieved on next head/get.

Expected behavior

1. Should support checksums calculation and persistency PutObject, CopyObject, UploadPart, UploadPartCopy, and then also retrieval on GetObject, HeadObject.
2. Should support also Trailers when applicable.

Steps to reproduce

1. For example aws s3 cp --checksum-mode ENABLED --checksum-algorithm CRC32|CRC32C|SHA1|SHA256 ...

[github-actions]

This issue had no activity for too long - it will now be labeled stale. Update it to prevent it from getting closed.

[github-actions]

This issue had no activity for too long - it will now be labeled stale. Update it to prevent it from getting closed.

[github-actions]

This issue had no activity for too long - it will now be labeled stale. Update it to prevent it from getting closed.

[github-actions]

This issue is stale and had no activity for too long - it will now be closed.