SOLR-18251: Introduced docValuesSkipList='true' field property

[VadimKirilchuk]

https://issues.apache.org/jira/browse/SOLR-18251

Description

Introduced docValuesSkipList='true' field property to allow creating DocValues Field instances with optional skip list index support, improving query performance.

Solution

Added a new boolean field property docValuesSkipList that can be set to true in schema field definitions (only fields supporting Numeric, Sorted Numeric, Sorted and Sorted Set doc value types). When enabled, Solr creates DocValues fields with an additional skip index, which enables more efficient range queries on DocValues. When not set (default false), standard DocValues fields are created without the skip index.

Changes include:

• New utility class DocValuesFieldUtil with methods to create DocValues fields with or without skip indexes (createSortedDocValuesField, createSortedSetDocValuesField, createNumericDocValuesField, createSortedNumericDocValuesField)
• Updated all DocValues-enabled field types (BoolField, CollationField, EnumFieldType, PointField, StrField, TrieField, SortableTextField, ICUCollationField) to respect the new property when creating DocValues fields
• Extended SchemaField and FieldProperties to expose the property in schema configuration

Tests

• Added REST API validation via TestFieldResource
• Comprehensive test suite DocValuesSkipListTest covering all DocValues field types (single and multi-valued)
• Test schema schema-docValuesSkipList.xml with full coverage of all DocValues types

Checklist

Please review the following and check all that apply:

• I have reviewed the guidelines for How to Contribute and my code conforms to the standards described there to the best of my ability.
• I have created a Jira issue and added the issue ID to my pull request title.
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• I have developed this patch against the main branch.
• I have run ./gradlew check.
• I have added tests for my changes.
• I have added documentation for the Reference Guide
• I have added a changelog entry for my change