Improve lobby screen header design

public/js/ui/components.js

@@ -76,6 +76,8 @@ export const ICONS = {
   wifiOff: { d: 'M2 17h3v4H2zm6-4h3v8H8zm6-4h3v12h-3zm6-4h3v16h-3zM2.4 1 23 21.6 21.6 23 1 2.4z' },
   expand: { d: 'M3 3h7v2H5v5H3zm11 0h7v7h-2V5h-5zM3 14h2v5h5v2H3zm16 0h2v7h-7v-2h5z' },
   collapse: { d: 'M8 3h2v7H3V8h5zm6 0h2v5h5v2h-7zM3 14h7v7H8v-5H3zm11 0h7v2h-5v5h-2z' },
+  // 添加到桌面 (add to home screen): a house outline with a + inside
+  homePlus: { d: 'M12 2 22 10.5V21H2V10.5zm0 2.6-8 6.8V19h16v-7.6zM11 10h2v2.5h2.5v2H13V17h-2v-2.5H8.5v-2H11z', eo: true },
   rotate: { d: 'M7 2h8a2 2 0 0 1 2 2v7h-2V4H7v16h4v2H7a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2zm8 12h5a2 2 0 0 1 2 2v4a2 2 0 0 1-2 2h-5a2 2 0 0 1-2-2v-4a2 2 0 0 1 2-2zm0 2v4h5v-4z', eo: true },
   book: { d: 'M2 4h7.5A3.5 3.5 0 0 1 12 5.1 3.5 3.5 0 0 1 14.5 4H22v16h-7.5a1.5 1.5 0 0 0-1.5 1.5h-2A1.5 1.5 0 0 0 9.5 20H2zm2 2v12h5.5c.5 0 1 .1 1.5.3V7.5A1.5 1.5 0 0 0 9.5 6zm10.5 0A1.5 1.5 0 0 0 13 7.5v10.8c.5-.2 1-.3 1.5-.3H20V6z', eo: true },
   // 观战 (spectator seats; the same eye as gameComponents.js GIcon 'eye')