Feature Request: Support Clustering in hudi-rs

### Feature Description

Clustering is a core optimization feature in Apache Hudi, widely used to manage small files and improve query performance.

I’d love to see support for clustering in hudi-rs, which could handle this efficiently thanks to Rust’s performance. This would enable production-grade optimization workflows in native Rust pipelines.

### Why this matters
- Performance: Rust is expected to make compute-intensive operations like clustering much more performant
- Ease of migration: Users who are using standalone clustering should be able to migrate to hudi-rs clustering easily
- Ecosystem trend: Similar efforts are emerging in other formats, e.g. [Iceberg compaction](https://github.com/nimtable/iceberg-compaction/tree/main).

### Suggested Scope
Initial support might include:
- Reading clustering plans
- Executing clustering as a standalone action
- Supporting inline clustering in write paths (optional follow-up)

### Prerequisites
- hudi-rs doesn't have write support overall, it needs to be able to write and commit data before we implementing complicated table services

### Additional context

_No response_

Start by reviewing the existing write and commit support in hudi-rs, then trace how table services could read clustering plans and execute a standalone clustering action. The issue identifies inline clustering as an optional follow-up; done would require write and commit support plus an agreed initial clustering scope, but no files or tests are named.

Written by the indexing model from the issue text.