Add implementation of universal NamedTypes decorator for ILinks

[konard]

Summary

This PR implements the NamedTypesDecorator that serves as a universal decorator implementing both ILinks and INamedTypes interfaces, as requested in issue #23.

Key Features:

• ✅ Dual Interface Implementation: Implements both ILinks<TLinkAddress> and INamedTypes<TLinkAddress>
• ✅ Complete Naming Operations: Supports setting, getting, and removing names for link addresses
• ✅ Automatic Cleanup: Names are automatically removed when links are deleted
• ✅ External Reference Support: Uses external references for proper name mapping
• ✅ Comprehensive Testing: Full test suite with 8 test cases covering all functionality

Implementation Details:

• INamedTypes Interface: Defines the contract for naming operations (GetName, SetName, GetByName, RemoveName)
• NamedTypesDecorator: Universal decorator extending LinksDecoratorBase and implementing INamedTypes
• Integration: Leverages existing UnicodeStringStorage and NamedLinks infrastructure
• Tracing Support: Optional tracing for debugging and monitoring

Test Coverage:

• Interface compliance verification
• Name setting and retrieval
• Name lookup by string
• Name removal functionality
• Name overwriting behavior
• Automatic cleanup on link deletion
• Graceful handling of non-existent names/links

Files Added:

• Foundation.Data.Doublets.Cli/INamedTypes.cs - Interface definition
• Foundation.Data.Doublets.Cli/NamedTypesDecorator.cs - Main implementation
• Foundation.Data.Doublets.Cli.Tests/NamedTypesDecoratorTests.cs - Comprehensive test suite

Test Results:

Passed!  - Failed: 0, Passed: 8, Skipped: 0, Total: 8

All tests pass successfully, confirming the implementation meets the requirements.

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Fixes #23

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