feat(status): add model status in statusbar tooltips and commandPalette, also adding heartbeat

[Sma1lboy]

• Add a heartbeat every minute to obtain the model's health status
• Add more details in the status bar tooltip
• Add detailed status in the command panel
• Use the isHealthCheckInProgress flag to prevent multiple health checks from occurring simultaneously, ensuring that each health check has a chance to complete
• Ensure that subsequent requests are not lost through pendingConnectRequest, but are executed after the current health check is completed
• Use debounceInterval to merge multiple connection requests within a short period, reducing unnecessary connection attempts
• refactor Command Palette make it easily adding item in future

Status bar

CommandPalette without code

CommandPalette with code