feat: add Range, RangeHelper, RowRangeIndex, and ByteRangeCombiner ut…

[dalingmeng]

Purpose

No Linked issue.

Introduce range-related utility modules to the apache/paimon-cpp codebase. These modules provide range representation, range manipulation helpers, row range indexing with binary search, and byte range combining adapted from Apache ORC.

• Introduce Range struct for inclusive integer range representation (include/paimon/utils/range.h, range.cpp)
• Introduce RangeHelper template for range splitting and merging operations (range_helper.h)
• Introduce RowRangeIndex for efficient intersection queries over sorted non-overlapping ranges using binary search (include/paimon/utils/row_range_index.h, row_range_index.cpp)
• Introduce ByteRangeCombiner for combining byte ranges, adapted from Apache ORC (byte_range_combiner.h, byte_range_combiner.cpp)
• Update LICENSE to add byte_range_combiner files under the Apache ORC attribution entry

Tests

• range_test.cpp — Range construction, count, intersection, merge, and string representation
• range_helper_test.cpp — RangeHelper split and merge operations
• row_range_index_test.cpp — RowRangeIndex intersection queries and edge cases
• byte_range_combiner_test.cpp — ByteRangeCombiner combining logic

API and Format

No API or format changes.

Documentation

No documentation changes.

Generative AI tooling

[leaves12138]

Thanks for the update. I found one compile-blocking issue: depends on via , but that header is not present in this PR/head tree, so including cannot compile. Please either add the missing / definition in this PR, include the correct existing header, or move into a header that is actually part of the branch before using it here.

[leaves12138]

This header is not present in the PR head tree ( / are both missing), but uses from it. As-is, this new header cannot compile. Please add the missing header/ definition, or include the correct existing header before using .

[leaves12138]

Thanks for the update. The previous missing-header blocker is resolved after removing ByteRangeCombiner from this PR, and I did not find any remaining blocking issue in the updated range/row-range changes.