feat: add batch read operation for meetings

[franccesco]

Summary

• Adds get_many() method to MeetingOperations for batch retrieval of multiple meetings
• Implements best-effort processing with comprehensive error handling
• Returns both successful retrievals and failures for graceful degradation

Key Changes

• New Feature: client.meeting.get_many([id1, id2, id3]) for batch reading meetings
• Tests: Comprehensive test coverage including success, partial failure, and error scenarios
• Documentation: Updated README, API docs, and bulk operations guide with examples
• Version: Bumped to 0.17.0 for new minor feature

Test Plan

• Unit tests pass for all scenarios (success, partial failure, network errors)
• Documentation examples are accurate and helpful
• Method integrates seamlessly with existing bulk operation patterns
• Manual testing with real API endpoints
• Performance validation with large batch sizes

🤖 Generated with Claude Code