Slots leaderboard additions

[csharpnerd11]

Is your feature request related to a problem? Please describe. When using !slots leaderboard, you can only reference the top 10 scores in order.

Describe the solution you'd like I'd like to be able to see a more detailed leaderboard with more data to glance at. Adding dates of when the score was achieved and a link back to the winning spin. This would be useful to see what wins those wins consisted of and would make playing the game more interesting while waiting on all of the spins to be calculated.

[smathep]

@butteredwaffles tagging so it'll let me assign to you

[butteredwaffles]

Commenting for assignment