[FLINK-40017] Introduce Seaweedfs in native-s3-fs

[Samrat002]

What is the purpose of the change

Introduce Seaweedfs IT suite for native s3 filesystem.

Brief change log

Add new test classes for native-s3-fs based on seaweedfs.

Verifying this change

Run CI / CD.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: yes

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

---

Was generative AI tooling used to co-author this PR?

• Yes (please specify the tool below)

Generated-by: [Tool Name and Version]

[flinkbot]

CI report:

• 3e3e45a Azure: FAILURE

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[Samrat002]

@flinkbot run azure