[Feature request] Keep track of your guess performance

Just like in Wordle, it would be nice if your scores could be tracked in a cookie/local storage as a histogram of how many guesses it took to determine the pokemon.

Start by locating where guesses are counted and where the result screen is rendered, then inspect how browser persistence is handled. The work is done when completed games are stored locally and displayed as a Wordle-style histogram grouped by the number of guesses.

Written by the indexing model from the issue text.