fix: display of outbound traffic (#3604)

shows the direction of traffic

.env.example

@@ -0,0 +1,4 @@
+XUI_DEBUG=true
+XUI_DB_FOLDER=x-ui
+XUI_LOG_FOLDER=x-ui
+XUI_BIN_FOLDER=x-ui

CONTRIBUTING.md

@@ -0,0 +1,5 @@
+## Local Development Setup
+
+- Create a directory named `x-ui` in the project root 
+- Rename `.env.example` to `.env `
+- Run `main.go`

web/html/xray.html

@@ -527,10 +527,10 @@
       findOutboundTraffic(o) {
         for (const otraffic of this.outboundsTraffic) {
           if (otraffic.tag == o.tag) {
-            return SizeFormatter.sizeFormat(otraffic.up) + ' / ' + SizeFormatter.sizeFormat(otraffic.down);
+            return `↑ ${SizeFormatter.sizeFormat(otraffic.up)} / ${SizeFormatter.sizeFormat(otraffic.down)} ↓`
           }
         }
-        return SizeFormatter.sizeFormat(0) + ' / ' + SizeFormatter.sizeFormat(0);
+        return `${SizeFormatter.sizeFormat(0)} / ${SizeFormatter.sizeFormat(0)}`
       },
       findOutboundAddress(o) {
         serverObj = null;