Saving stats information

[Vlek]

In order to do #6, we need to first be able to save that information when playing the game.

Regardless of what the end-stage is for a game, it should go through a stats collection stage.

This stats collection should:

• Look for a stats json file
  • If one is not present, create the base stats object.
  • Else, read the data from the file
• Increment the data for the game:
  • Number of games played
  • Wins/loses/draws depending on outcome
  • If win, update current winning streak.
    • If current winning streak > longest winning streak:
    • Update longest winning streak.
  • Blackjacks
• Update last played to now

[Vlek]

Done!