[lake/iceberg] Implement IcebergLakeCatalog for PK Tables

[MehulBatra]

Purpose

Add support for IcebergLakeCatalog for fluss primary key tables

Linked issue: close #1337

Brief change log

• Added new file for IcebergLakeCatalog implementing LakeCatalog
• Modified IcebergLakeStorage.createLakeCatalog method
• In progress

Tests

In progress

API and Format

In progress

Documentation

In progress

[MehulBatra]

@luoyuxia Please help me with the review, whenever you get time!

[Copilot]

Pull Request Overview

This PR implements IcebergLakeCatalog to add support for Fluss primary key tables in Iceberg lake storage. The implementation provides the infrastructure to create Iceberg tables that correspond to Fluss primary key tables with proper schema conversion and partitioning.

• Adds a new IcebergLakeCatalog class implementing the LakeCatalog interface
• Updates IcebergLakeStorage to return the new catalog implementation instead of throwing UnsupportedOperationException
• Defines Iceberg version property in the Maven POM

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
IcebergLakeStorage.java	Updates createLakeCatalog method to return IcebergLakeCatalog instance
IcebergLakeCatalog.java	New implementation of LakeCatalog interface for Iceberg integration
pom.xml	Adds iceberg.version property definition

[luoyuxia]

@MehulBatra Thanks for the pr. Left some comments. PTAL.
Also, please don't forget to add test to cover it.

[luoyuxia]

@MehulBatra Thanks for the pr. Left minor comments. PTAL

[luoyuxia]

@MehulBatra Left some comments again. PTAL

[luoyuxia]

@MehulBatra I append a some commit to improve some code, PTAL. If you have no question, I'll merge later.

[MehulBatra]

@MehulBatra I append a some commit to improve some code, PTAL. If you have no question, I'll merge later.

Thanks @luoyuxia for the review and feedback!

[luoyuxia]

Merging......

[SML0127]

@MehulBatra Thanks for the great work. I’ll follow up