Removed old web ui plugin

DiscordBotWebUI/StartupActions/Actions/PurgePlugins.cs

@@ -0,0 +1,16 @@
+namespace DiscordBotWebUI.StartupActions.Actions;
+
+public class PurgePlugins : IStartupAction
+{
+    public string Command => "purge_plugins";
+    public void RunAction(string[] args)
+    {
+        foreach (var plugin in Directory.GetFiles("./Data/Plugins", "*.dll", SearchOption.AllDirectories))
+        {
+            File.Delete(plugin);
+        }
+
+        File.Delete("./Data/Resources/plugins.json");
+        Directory.Delete("./Libraries/", true);
+    }
+}