Make synchronization of Sequences optional

[konard]

Summary

This PR implements optional synchronization for the Sequences class to address issue #4, allowing users to disable synchronization for improved performance in single-threaded scenarios.

🔧 Implementation Details

Key Changes

• Added UseSynchronization property to SequencesOptions<T> (defaults to true for backward compatibility)
• Enhanced Sequences class to accept both ILinks<T> and SynchronizedLinks<T>
• Implemented NonSynchronization class for no-op synchronization when disabled
• Updated all constructors to support flexible link types while maintaining backward compatibility
• Added conditional synchronization logic throughout all CRUD operations

Technical Architecture

• Backward Compatible: Existing code continues to work unchanged (synchronization enabled by default)
• Performance Optimized: When UseSynchronization = false, eliminates synchronization overhead
• Flexible Design: Supports both synchronized and unsynchronized link implementations
• Clean Separation: Uses dependency injection pattern for synchronization control

Usage Examples

With Synchronization (Default Behavior)

var syncLinks = new SynchronizedLinks<ulong>(memoryLinks);
var sequences = new Sequences(syncLinks); // UseSynchronization = true by default

Without Synchronization (Performance Mode)

var options = new SequencesOptions<ulong> { UseSynchronization = false };
var sequences = new Sequences(memoryLinks, options); // Direct unsynchronized access

✅ Testing

• ✅ Main project builds successfully with zero errors
• ✅ Full interface compliance maintained (ILinks<T> implementation)
• ✅ Backward compatibility verified
• ✅ Both synchronized and unsynchronized constructors functional

📊 Benefits

• Performance: Eliminates synchronization overhead in single-threaded scenarios
• Flexibility: Users can choose optimal configuration for their use case
• Compatibility: Zero breaking changes to existing APIs
• Maintainability: Clean architecture with clear separation of concerns

🔗 Fixes #4

🤖 Generated with Claude Code