Added scoring and timer adjustment, improved gameplay flow

In response to player feedback, I've updated UHD2ST! Now your strategem trainer boasts improved performance, faster animations, streak scoring, as well as a more customizable timer to allow players to really feel the pressure should they so choose.

Added:
* Streaks, Scores, and Highscores - currently does not persist between page loads. If you want to save your high scores, link a screenshot in the comments!
* Failure Timer Adjustment - Last update I added an option to enable a countdown timer to force a failure of the strategem if inputs were not provided quickly enough, but now under Settings when the timer is enabled, there is an input field to allow players to set their own reset timer if they want a shorter time limit to really challenge themselves.

Modified:
* Improved transition speed of outgoing/incoming stratagems to reduce downtime and false-failures. There is still room for some improvement here, so don't hesitate to post a comment and share your ideas or any problems you encounter there.