Create a grid that's 3 squares by 3 squares.
We should have a RESTART button that restarts the game
There’s two players (“X” and “O”) that takes turns during the game
The first player to get 3 of their marks in a row (vertically, horizontally, or diagonally) is the winner, we should display the winner somehow. example:
[X][O][O]
[O][X][X]
[O][ ][X]
X is the winner!