Live mode 2 (#226)

* refactoring play, pause, resume, load style sheet to subscribe style code

* support live mode in state machine

* 1. upgrade @xstate/fsm
2. add toggle interact methods to the player

package.json

@@ -59,7 +59,7 @@
   },
   "dependencies": {
     "@types/smoothscroll-polyfill": "^0.3.0",
-    "@xstate/fsm": "^1.3.0",
+    "@xstate/fsm": "^1.4.0",
     "mitt": "^1.1.3",
     "pako": "^1.0.11",
     "rrweb-snapshot": "^0.7.26",