This PR implements hot-reloading functionality for Homebridge plugins, allowing users to reload plugins without restarting the entire Homebridge server. This is particularly useful during plugin development and for updating plugins without service interruption.

Key Features

Plugin Hot-Reloading:

• Reload individual plugins by plugin identifier
• ESM-compatible module cache invalidation using query parameters
• Automatic clearing and re-registration of accessories and platforms
• Comprehensive error handling for invalid plugins

IPC Integration:

• New RELOAD_PLUGIN IPC event for external tool integration
• Compatible with Homebridge UI and other management tools
• Maintains existing IPC architecture patterns

Implementation Details:

• Plugin.reload() method handles module reloading and re-initialization
• PluginManager.reloadPlugin() manages plugin mappings and lifecycle
• Server-side IPC handler processes reload requests from external tools
• Proper cleanup of existing registrations before reload

Usage

The reload functionality can be triggered via IPC for integration with external tools:

// External tool can send IPC message
process.send({
  id: 'reloadPlugin',
  data: 'homebridge-example-plugin'
});

Testing

Comprehensive test suite covering:

• Successful plugin reload scenarios
• Error handling for invalid plugins and syntax errors
• Registration clearing and re-initialization
• IPC event handling

All 60 tests pass with full TypeScript compilation and ESLint compliance on the beta-2.0.0 codebase.

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