feat: Implement server and client metrics collection and monitoring

- Added a new PHP script for collecting server metrics every 30 seconds.
- Created a ServerMonitoring class to handle metrics collection for CPU, RAM, Disk, and Network.
- Introduced database tables for storing server and client metrics.
- Updated server view template to display real-time metrics using Chart.js.
- Added translations for monitoring UI elements.
- Created a new monitoring template for detailed server metrics visualization.
- Implemented client speed tracking and display in the monitoring UI.

templates/layout.twig

@@ -6,6 +6,8 @@
     <title>{% block title %}{{ app_name }}{% endblock %}</title>
     <script src="https://cdn.tailwindcss.com"></script>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
+    {% block styles %}{% endblock %}
     <style>
         .gradient-bg {
             background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);