Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/scheduler/animationFrame.js

@@ -0,0 +1,5 @@
+import { AnimationFrameAction } from './AnimationFrameAction';
+import { AnimationFrameScheduler } from './AnimationFrameScheduler';
+export var animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);
+export var animationFrame = animationFrameScheduler;
+//# sourceMappingURL=animationFrame.js.map