Copy and relocation complete game

We need a new api call for copy full game (the game should be a template) in another position. We need calculate the center point of multiple coordinates (contents of game) and translate all contents to new position.

POST /game/{pk}/clone/

```
{
  position: {
    longitude: 37.123321,
    latitude: -6.893827
  }
}
```

return: 201 if game is copied