Place animals further away from players

[psampathkumar]

Is your feature request related to a problem? Please describe. Animals can kill players in the first turn.

Describe the solution you'd like Have a way, where animals are placed far away from players.

Describe alternatives you've considered Let players die

Additional context Port: https://github.com/freeciv/freeciv/commit/4f434efe2a2bbf217bfcce95e63e4f8d2d789752 without hardcoding the distance and make the distance part of the mapgen parameters. HRM: https://www.hostedredmine.com/issues/697677