DRILL-8543: Add Support for Materialized Views

[cgivre]

DRILL-8543: Add Support for Materialized Views

Description

This PR adds materialized view support to Apache Drill, enabling users to store pre-computed query results for improved query performance.

Features

• SQL Commands: CREATE [OR REPLACE] MATERIALIZED VIEW, DROP MATERIALIZED VIEW, and REFRESH MATERIALIZED VIEW
• Query Rewriting: Automatic query optimization using Calcite's SubstitutionVisitor to transparently rewrite queries to use materialized views when beneficial
• Parquet Storage: MV data stored as Parquet files for efficient columnar access
• Metastore Integration: Optional synchronization of MV metadata to Drill Metastore (Iceberg, RDBMS, MongoDB backends)

Implementation

• New SQL parser classes for MV statements
• MaterializedView data model with JSON serialization (.materialized_view.drill files)
• MaterializedViewHandler for CREATE/DROP/REFRESH operations
• MaterializedViewRewriter for query plan substitution
• DrillMaterializedViewTable implementing Calcite's TranslatableTable
• Metastore API extensions: MaterializedViews interface and MaterializedViewMetadataUnit
• Iceberg metastore backend implementation for MV metadata

Configuration

• planner.enable_materialized_view_rewrite (default: true) - Controls automatic query rewriting

Documentation

Added docs/dev/MaterializedViews.md with complete feature documentation

Testing

Added additional unit tests.

[letian-jiang]

LGTM. Materialized view is a powerful feature for analytic engine. 🥳

[letian-jiang]

We could also add a plan-asserting test to ensure the query is correctly rewrite using MV.

[cgivre]

@letian-jiang I believe I addressed your review comments. Could you please mark the review as complete so we can merge?
Thanks!

[letian-jiang]

LGTM