feat: execute type-safe SQL writes

[omer-cengel]

Summary

Add executable, type-safe methods for the supported basic single-table write-query subset, returning JDBC affected-row counts.

Changes

• Analyze declared INSERT, UPDATE, and DELETE writes against schema tables.
• Preserve logical Java parameter order and textual JDBC binding order.
• Generate resultless int-returning methods that delegate to QueryExecutor.execute.
• Execute writes through JDBC with existing resource handling and exception translation.
• Add generated-source and H2-backed coverage for INSERT, out-of-order UPDATE, and DELETE behavior.

Scope and non-goals

Support is limited to one unaliased table, explicit single-row placeholder-only INSERT values, direct-placeholder UPDATE assignments, and the existing supported WHERE predicate forms. RETURNING clauses, generated keys, batches, upserts, transactions, computed assignments, aliases, joins, subqueries, multi-table writes, and generalized unsupported-syntax validation remain excluded.