Add Board Game Envs

[leonard-q]

Please describe the feature you want to add. A clear and concise description of what the feature. Ex. I'm going to implement ...

I will add board game environment such as tictactoe and omok

Additional requirement A clear and concise description of additional requirement for the new feature

None

Reference Please append the reference about the feature

Envs of AlphaOmok(https://github.com/reinforcement-learning-kr/alpha_omok)