Add random map generation

[ben-ryder]

Describe your feature
Currently maps can be selected from a list. I suggest adding a random map generator.
This could also involve adding a step to the new game menu where a user can regenerate a starting map until they are happy. This would allow the map generator to be less refined to begin with, while ensuring the map is good to play on.

Is your suggestion related to any problems?
n/a

Additional context
n/a