[FEAT] Autoplay for smaller grids

[DeguShi]

Given that smaller sizes of grids are now possible (the smallest used to be 10), there is a need to update the cycle used in autoplay.
After testing the gameplay with 8x8 grids or lower, the current main cycle used in autoplay doesn't work, therefore it requires a simpler solution instead.

[DeguShi]

looking back, the best solution is probably making the grid size be min(10, user_choice) instead, although it is possible to implement a solution for smaller boards, the result is not satisfying to watch, which defeats the original purpose of having an autoplay game mode to begin with.