Phase 4: Update Documentation with Migration Guide

[Sinitca-Aleksandr]

This issue tracks the fourth phase of our C/C++ code migration plan. The goal is to create comprehensive documentation that helps users migrate from the old import paths to the new structure.

Objectives:

1. Create detailed migration guide
2. Document equivalent imports for all major functions
3. Add examples showing old vs new usage
4. Update API reference documentation
5. Create deprecation timeline

Implementation Plan:

1. Create MIGRATION_GUIDE.md with sections:
   • Overview of changes
   • Import path equivalents table
   • Step-by-step migration instructions
   • Common pitfalls and solutions
2. Update README.md with new import examples
3. Revise API documentation to show both old and new paths
4. Add deprecation notices with timeline (v1.x → v2.0)
5. Create example scripts showing migration process
6. Add FAQ section addressing common concerns

Acceptance Criteria:

• Migration guide covers all major use cases
• Examples work correctly for both old and new imports
• Documentation clearly indicates deprecation timeline
• Users can successfully migrate with provided guidance
• FAQ addresses common migration questions
• Documentation tests pass (if applicable)