Advanced S3 calls

[djwfyi]

minio PR 16551 introduces if-match and if-none-match logic for optimistic consistency of data.

The logic provides conditions where data uploads to MinIO can check the consistency of data first before applying any changes. This avoids potential conflicts if more than one user attempts to upload the same object.

External references:

• https://learn.microsoft.com/en-us/azure/storage/blobs/concurrency-manage?tabs=dotnet#optimistic-concurrency

(Introduced with https://github.com/minio/minio/releases/tag/RELEASE.2023-02-09T05-16-53Z.)

[djwfyi]

See minio/minio#19682, part of https://github.com/minio/minio/releases/tag/RELEASE.2024-05-07T06-41-25Z

Adds * as a valid ETag.

[djwfyi]

@ravindk89 Since AWS recently introduced a similar feature, we might consider bumping up the priority of this.

[ravindk89]

It's not a perfect spot to put it but we could take a bit of inspiration from the s3 docs and add a section to our docs related to metadata or other 'modifying' behaviors. Snowball + S3Zip support could land here too.