后台：添加跳转地址功能

gm-server/app/controller/game.ts

@@ -0,0 +1,10 @@
+import { Controller } from 'egg';
+
+export default class GameController extends Controller {
+
+  public async getServerEnv() {
+    const { ctx } = this;
+    ctx.body = await ctx.service.game.getServerEnv();
+    return 
+  }
+}