Add dice lib

[ArkhamCookie]

• Added dice tasks
• Replaced '-' (dash) with real emdash
• Add dice to fun lib
• Setup workspace + module
• Created internal module for dice
• Created Roll helper function
• Created coin function
• Created first dice (d2)
• check off todo tasks
• Add standin file for dice module testing
• Add comment for exported function
• gofmt
• Reworked how dice.Coin works
• Fix comments
• Created test for dice.CoinFlip
• Add missing comment
• Renamed dice files to diceTypes
• Added most of the planned types of dice
• Fixed capitalized error message
• D* now allows you to roll more than once at a time
• Created first test for diceTypes
• Added D00
• Added missing count--
• Renamed modules to work better
• Add dice/roll to be required for crabot/dice
• More module editing
• Update docs
• Updated test to be correct test
• Added note about d00 branch