[Go] Move `max_termination_steps` to `games/go.py`

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (296b845) 88.11% compared to head (b4b942e) 88.11%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1156 +/- ## ======================================= Coverage 88.11% 88.11% ======================================= Files 64 64 Lines 5999 6000 +1 ======================================= + Hits 5286 5287 +1 Misses 713 713 ```

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