Request to review PR: Support for Bitset

Hi @emirpasic and maintainers,

This PR introduces a full BitSet implementation under sets/bitset/ with support for the sets.Set[int] interface, serialization, set algebra operations, unit tests, benchmarks, and README updates.

The implementation appears complete and has:

• O(1) add/remove/contains via bit operations
• Efficient memory usage for dense integer domains
• Word-level intersection/union/difference operations
• Auto-growing storage
• Full test coverage for core behavior and edge cases
• Benchmarks across multiple dataset sizes

Would appreciate a review from the maintainers when possible, particularly around:

Thanks.