Add a live results room (for tournaments)

[alopezlago]

Add a live results room, to support #29. This could be done in one of the following ways:

• Have it update after every X cycles, e.g. after question 5, 10, 15, etc. This could be after every cycle.
• Have it update after every scoring action. This might be too noisy when multiple games are occurring, but would be the closest to live results.

The room where live results are posted could either be created by the bot (if it has permissions), or assigned by the server admin. The location of the live results room should live in the GuildSettings table, and it should contain the ID of the text channel.