A program that generates a classic Sudoku (9x9 grid)
MODULES:
- Main --> user window, asks the user if they want a sudoku board and if they want the solution
- Sudoku --> generates randonly arrenged sudoku grids
- Sudoku Solver --> solves a given sudoku (in matrix for and with 0 for blank spaces)
- Sudoku Generator --> uses the previous 2 classes to check that the sudoku generate is solvable and has one unique solution