Reorganize SDK to support both v1 and v2 APIs following Go conventions:
- sdk/edgeconnect/ now contains v1 SDK (from revision/v1 branch)
- sdk/edgeconnect/v2/ contains v2 SDK with package v2
- Update all CLI and internal imports to use v2 path
- Update SDK examples and documentation for v2 import path
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
