Expanding the Vanilla High Advancements with Goals/Challenges for stats

[SupersuMC]

While, yes, stat padding generally isn't done, it would be nice to have a permanent record of stat achievements should someone come and take a top spot from you. Therefore, I suggest goals and challenges for stat awards: Goals for getting in the top 3, and challenges for showing on the awards front page. For example, "Walked to Mordor" for a top spot in Traveler, and "...and back home again." for the #1 spot.