add version info and GitHub link on index

assets/static/css/index-color.css

@@ -108,6 +108,11 @@ section.proxy-list .proxy-info .layui-row .layui-row > div:first-child {
     border-color: #fde2e2;
 }
 
+.version a,
+.version span {
+    color: #99a9bf;
+}
+
 @media (prefers-color-scheme: dark) {
     .layui-bg-blue {
         background-color: #395c74 !important;

assets/static/js/index-server-info.js

@@ -38,6 +38,7 @@ var loadServerInfo = (function ($) {
     function renderServerInfo(data) {
         var html = layui.laytpl($('#serverInfoTemplate').html()).render(data);
         $('#content').html(html);
+        $('#frpVersion').text(data.version);
 
         renderTrafficChart(data);
         renderCountChart(data);