feat: 主菜单加游戏工作台入口

wwwroot/index.ui

@@ -64,6 +64,12 @@
                 "height": "100%",
                 "target": "app.main_content",
                 "items": [
+                  {
+                    "name": "workbench",
+                    "label": "游戏工作台",
+                    "icon": "",
+                    "script": "var d={name:'workbench',label:'游戏工作台',content:{widgettype:'urlwidget',options:{url:'/scense_game/workbench/workbench.html'}}};if(!this.opts.items.find(function(i){return i.name==='workbench'})){this.opts.items.push(d);this.add_tab(d)}this.show_tabcontent({params:{name:'workbench'}})"
+                  },
                   {
                     "name": "world",
                     "label": "世界",