meta(charset): 添加字符集元标签以支持严格来源策略

- 在HTML头部添加meta标签配置referrer策略为strict-origin-when-cross-origin适配cesium地图

public/index.html

@@ -10,6 +10,7 @@
   <meta name="renderer" content="webkit"/>
   <meta http-equiv="X-UA-Compatible" content="IE=edge,Chrome=1"/>
   <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no,viewport-fit=cover">
+  <meta charset="UTF-8" name="referrer" content="strict-origin-when-cross-origin"/>
   <% for (const item of $links) { %>
   <link type="text/css" rel="stylesheet" href="<%= item %>"></link>
   <% } %>