reorganize and cleanup php server code

server/app/Support/Plugins/Users.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Vanguard\Support\Plugins;
+
+use Vanguard\Plugins\Plugin;
+use Vanguard\Support\Sidebar\Item;
+
+class Users extends Plugin
+{
+    public function sidebar()
+    {
+        return Item::create(__('Users'))
+            ->route('users.index')
+            ->icon('fas fa-users')
+            ->active("users*")
+            ->permissions('users.manage');
+    }
+}