fix: Oracle PL/SQL TYPE ... IS RECORD parsing in package body

[daguimu]

Problem

Oracle PL/SQL parser throws ParserException: TODO when encountering TYPE ... IS RECORD(...) declarations inside package bodies, procedures, or DECLARE blocks.

-- This fails with: TODO : ... token IDENTIFIER record
CREATE OR REPLACE PACKAGE BODY pkg_test IS
    PROCEDURE test_proc AS
        TYPE T_Rec IS RECORD(
            id NUMBER,
            name VARCHAR2(100));
    BEGIN
        NULL;
    END test_proc;
END pkg_test;

Root cause: In OracleStatementParser (line ~2129), the TYPE ... IS handler only supported REF CURSOR, TABLE OF, and VARRAY — RECORD was missing, falling through to a throw new ParserException("TODO").

Fix

Add RECORD type parsing to the PL/SQL declaration section, following the same implementation pattern already used at line ~2940 in the same file. The fix parses RECORD(field1 type1, field2 type2, ...) using SQLRecordDataType and parseColumn() which already exist in the codebase.

Tests Added

6 test cases in Issue6589.java:

• test_type_is_record_in_package_body_procedure — RECORD type inside a procedure in a package body
• test_type_is_record_in_declare_block — RECORD type in a standalone DECLARE block
• test_type_is_record_multiple_fields — RECORD with 4 fields of different types
• test_ref_cursor_still_works — regression: REF CURSOR still works
• test_table_of_still_works — regression: TABLE OF still works
• test_package_spec_and_body_with_record — package spec + body with / separator

All 15 existing Oracle issue tests pass.

Note

The original issue's full SQL file also uses BULK COLLECT INTO and other advanced PL/SQL features that remain unsupported. This PR addresses the TYPE IS RECORD parsing specifically.

Fixes #6589