Lights out internal structural design

[emancilla77]

Closes: #89

Issues:

• "Redundant final modifier" error passed from checkstyle for 3 lines, but removal of final operator creates "parameter needs final modifier" issue. This is rooted in a conflict in the checkstyle config, not my code itself

[jody]

See the inline comments.

Also remove build artifact ConsoleGameHub.jar from this PR.

[jody]

I expect this to be a compilation error. Please provide documentation of an error-free build.

[jody]

I see in your comment that you identified "checkstyle" errors here. I think that's likely to be a result of this not being correct Java, which is a precondition for meaningful usage of checkstyle.

Looking at the code, it appears that you're tyring to define an abstract class called BoardGenerator, and an abstract method within that class called generateSolvable. But there's no abstract keyword on either.

Or it could be that generateSolvable was meant to be a method stub. In that case there needs to be a body defined that at least returns the proper data type.