feat: add dark/light mode toggle to navigation, enhance sidebar styles, and update layout colors

- Implemented a button for toggling between dark and light modes in the navigation component.
- Adjusted sidebar width and improved active link indicators with shadows for better visibility.
- Updated layout colors for a more vibrant and cohesive theme, focusing on a "Pure Neutral Black + Neon" aesthetic.
- Refined ambient gradient accents for improved content readability across devices.
- Enhanced console layout for better responsiveness and user experience.

extensions/Others/UptimeLab/resources/views/index.blade.php

@@ -1,4 +1,4 @@
-<div class="w-full">
+<div class="container mx-auto px-4 py-8 sm:px-6 lg:px-8">
     <!-- Custom CSS for animations -->
     <style>
         @keyframes status-pulse {