[Subtask] Authentication and authorization support for Iceberg REST server

[FANNG1]

Describe the subtask

Authentication and authorization is critical for vendor users, we should support it

Parent issue

#4058

[nqvuong1998]

Hi @FANNG1 , any updates for this task?

[nqvuong1998]

The Graviton Iceberg REST service would benefit from supporting the following features:

• Authentication: Integration with LDAP and OAuth2 (e.g., Client Credentials Flow, Authorization Code Flow, etc.).
• Authorization: Compatibility with tools like Apache Ranger.
• Audit: Event storage in systems such as Kafka, S3, or Elasticsearch.
• Impersonation: Functionality similar to HiveMetastore.