Feature request: diceware generator

[Datz]

Is your feature request related to a problem? Please describe.
A diceware generator implementation. (https://en.wikipedia.org/wiki/Diceware)

Describe the solution you'd like
A producer for a diceware string with configurable number of English words like
mortally gloater error punch unsteady supply neglector

Describe alternatives you've considered
Optional: configurable number of extra characters to increase the entropy
mortally gloater error 7 punch unsteady $ supply neglector

Additional context
see https://xkcd.com/936/