v1.3.0 Zombie Build Rate Options!

This release adds Zombie Player build rate buffs that affect all units owned by the Zombie layer (not just zombified units). These are selected from the lobby options.

Changelog:

• Adds Zombie Player build rate buff
• Adds lobby options:
  • None
  • 1.25x
  • 1.5x
  • 1.75x
  • 2x
  • 2.5x
  • 3x
  • 4x