[mirotalksfu] - #22 add real-time polls

public/js/Rules.js

@@ -22,6 +22,7 @@ let BUTTONS = {
         startScreenButton: true,
         swapCameraButton: true,
         chatButton: true,
+        pollButton: true,
         raiseHandButton: true,
         transcriptionButton: true,
         whiteboardButton: true,