Automatic management of dice pool qualities based on number of dice

[ProjectMoon]

To add proper variable support, we need to automatically chance dice pool qualities based on number of dice in the pool.

• Automatically go to a chance die if pool is <= 0.

[ProjectMoon]

Fixed in https://github.com/ProjectMoon/matrix-dicebot/commit/1a980aa608b55f9deb3f5b15c13f0a6408243c0a