Updated plugin installation and plugin loading

WebUI/Models/OnlinePluginViewModel.cs

@@ -2,10 +2,10 @@ namespace WebUI.Models;
 
 public class OnlinePluginViewModel
 {
+    public int Id { get; set; }
     public string Name { get; set; }
     public string Description { get; set; }
     public string Author { get; set; }
     public string Version { get; set; }
-    
     public string DownloadUrl { get; set; }
 }