test: temp export play() for honest headless verification

plugin.js

@@ -380,6 +380,7 @@
         var movie = Object.assign({}, m, { img: resolve(m.poster || m.cover) });
         Lampa.Torrent.open(m.hash, movie);
     }
+    window.__mymovies_test_play = play;
 
     // ---------- Menu item ----------
     // Lampa builds the main menu on the 'menu:start' event. We add our item via the