Refactor plugin management system

- Updated PluginLoader to utilize the new plugin marketplace manager for loading and managing plugins.
- Simplified the plugin loading process by removing unnecessary state management and directly integrating with the plugin marketplace.
- Enhanced error handling during plugin installation and uninstallation processes.
- Removed legacy code related to Electron-specific plugin handling, streamlining the codebase for web compatibility.
- Updated Plugins component to fetch marketplace plugins and installed plugins using the new plugin marketplace manager.
- Refactored types related to plugins to import from the new plugin manager module, ensuring consistency and reducing redundancy.
- Removed unused calling configuration from client settings and adjusted related types accordingly.
- Cleaned up room state events by removing references to LiveKit service URLs, aligning with the updated architecture.

config.json

@@ -10,10 +10,6 @@
   ],
   "allowCustomHomeservers": true,
 
-  "calling": {
-    "livekitServiceUrl": "https://b.ruv.wtf/matrix-rtc/livekit/jwt"
-  },
-
   "featuredCommunities": {
     "openAsDefault": false,
     "spaces": [