Feat: room-link copy

components/room.html

@@ -3,6 +3,7 @@
   <div id="meta">
     <p>Hello {{.State.Username}};</p>
     <p>Room created by {{.Room.CreatorName}};</p>
+    <p>Room link:</p><p><input id="roomlink" readonly="" onclick="copyText()" value="{{.Room.RoomLink}}"></input></p>
     <p>Game is running: {{.Room.IsRunning}}</p>
     <p>
       {{if and (eq .State.Username .Room.CreatorName) (not .Room.IsRunning)}}