feat: Real-time Outbound Traffic, UI Improvements & Fix (#3629)

* Refactor HTML and JavaScript for improved UI and functionality

- Cleaned up JavaScript methods in subscription.js for better readability.
- Updated inbounds.html to clarify traffic update handling and removed unnecessary comments.
- Enhanced xray.html by correcting casing in routingDomainStrategies.
- Added mobile touch scrolling styles in page.html for better tab navigation on small screens.
- Streamlined vless.html by removing redundant line breaks and improving form layout.
- Refined subscription subpage.html for better structure and user experience.
- Adjusted outbounds.html to improve button visibility and functionality.
- Updated xray_traffic_job.go to ensure accurate traffic updates and real-time UI refresh.

* Refactor client traffic handling in InboundService

- Updated addClientTraffic method to initialize onlineClients as an empty slice instead of nil.
- Improved clarity and consistency in handling empty onlineUsers scenario.

* Add WebSocket support for outbounds traffic updates

- Implemented WebSocket connection in xray.html to handle real-time updates for outbounds traffic.
- Enhanced xray_traffic_job.go to retrieve and broadcast outbounds traffic updates.
- Introduced MessageTypeOutbounds in hub.go for managing outbounds messages.
- Added BroadcastOutbounds function in notifier.go to facilitate broadcasting outbounds updates to connected clients.

---------

Co-authored-by: lolka1333 <test123@gmail.com>

web/html/common/page.html

@@ -24,6 +24,40 @@
     body {
       font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Vazirmatn', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
     }
+    
+    /* mobile touch scrolling for tabs */
+    @media (max-width: 576px) {
+      .ant-tabs-nav-container {
+        overflow-x: auto !important;
+        -webkit-overflow-scrolling: touch;
+        scroll-behavior: smooth;
+        overscroll-behavior-x: contain;
+        white-space: nowrap;
+        max-width: 100%;
+        padding: 0 !important; /* Remove padding for arrows */
+      }
+      .ant-tabs-nav-wrap {
+        overflow: visible !important;
+        padding: 0 !important;
+      }
+      .ant-tabs-nav-scroll {
+        overflow: visible !important;
+        box-shadow: none !important;
+      }
+      .ant-tabs-nav {
+         display: flex !important;
+         transform: none !important; /* Disable JS transform */
+         width: auto !important;
+         margin: 0 !important;
+      }
+      .ant-tabs-tab-prev,
+      .ant-tabs-tab-next {
+        display: none !important; /* Hide arrows */
+      }
+      .ant-tabs-nav-container::-webkit-scrollbar {
+        display: none;
+      }
+    }
   </style>
   <title>{{ .host }} – {{ i18n .title}}</title>
 {{ end }}