BUG: if-not-match not supported in S3

[dentiny]

Describe the bug

Hi team, S3 put object and complete multipart upload have if-none-match support.

• https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObject.html#API_PutObject_RequestSyntax
• https://docs.aws.amazon.com/AmazonS3/latest/API/API_CompleteMultipartUpload.html#API_CompleteMultipartUpload_RequestSyntax

But they're not supported in our S3 implementation https://github.com/apache/opendal/blob/main/core/services/s3/src/core.rs

Steps to Reproduce

N/A

Expected Behavior

All S3 request fields should be supported.

Additional Context

No response

Are you willing to submit a PR to fix this bug?

• Yes, I would like to submit a PR.

[Xuanwo]

AWS S3's if-none-match only accepts * which is if-not-exists at the opendal side.

[dentiny]

It's my bad -- our internal S3 uses ETAG for conditional write, while S3 "Expects the * character (asterisk)."
Reference: https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObject.html