Add WebSocket event monitoring functionality to soundtouch-cli:
• New 'events subscribe' command for real-time device monitoring
• Support for all 8 event types: nowPlaying, volume, connection, preset, zone, bass, sdkInfo, userActivity
• Event filtering with --filter flag (comma-separated list)
• Duration limits with --duration flag
• Reconnection control with --no-reconnect flag
• Verbose logging with --verbose flag
• Comprehensive test coverage with 349+ test cases
• Full documentation updates in CLI-REFERENCE.md and websocket-events.md
Usage examples:
- soundtouch-cli --host 192.168.1.100 events subscribe
- soundtouch-cli --host 192.168.1.100 events subscribe --filter volume,nowPlaying
- soundtouch-cli --host 192.168.1.100 events subscribe --duration 5m --verbose
Resolves README discrepancy - the documented command now works as expected.
All golangci-lint issues resolved, maintains code quality standards.
