[FEATURE] Documentation for implementing the puzzle editor for a new puzzle

[charlestian23]

Is your feature request related to a problem? Please describe.

Currently, there is no documentation for developers trying to implement the puzzle editor for a new puzzle.

Describe the solution you'd like

Some documentation for how the Nurikabe puzzle editor was implemented as a sample would be nice. Should be similar to the documentation here: https://github.com/Bram-Hub/Legup/wiki/Implementing-Puzzles

Describe alternatives you've considered

No response

Additional Context

Thanks to @HenryCullom on compiling a list of what needs to be done to support a new puzzle:

[VortiganOfficial]

I added the typed version of the discord messages in the tutorial, but I understand that the explanation probably needs pictures and better explanations