feat: make the golden asteroid at spawn optional

[BenjaminAmos]

Description

This pull request makes spawning the golden asteroid conditional on enabling a debug option. This option is on by-default in from-source workspaces.

Whilst the ECS asteroid is a useful debugging tool, I do not believe that it is intended for regular players to use.

Testing

• Play the game and the golden ECS asteroid should spawn as usual.
• Close the game.
• Change spawnECSAsteriod in debugOptions.ini to false.
• When starting a new game, the golden asteroid should no longer spawn.