Add economy system

[JohnnyJayJay]

Currently, chips have no real value and are therefore pretty meaningless. The bot could become more interesting if players had an actual, limited balance of chips that they would increase by winning games.

This would involve a couple of changes such as a database to store the chips of each player. Also, it requires some balancing:

• What's the initial amount of chips you get?
• How can you get chips without winning games (to not make it frustrating and to be able to build a solid budget)?
  • daily reward?
  • voting on top.gg?

[JohnnyJayJay]

I think it would be good to simultaneously keep the old system nonetheless, so you can play any time without having to worry about your balance.

[JohnnyJayJay]

What should also be in the scope of this issue is the addition of custom buy-ins. To manage your balance you should only be restricted by a minimal, rather than a fixed buy-in.