v1.4.0: Refactor auto-reset behaviour + some small fixes

• Refactor environments and wrappers. People had been running into errors with the confusion provided by the auto-reset behaviour. The environments and wrappers have now been refactored to make it very explicit which one is being used. A downside of this is that there are now 8 different environments (classic?, symbolic?, autoreset?).
• Fix play script bugs
• Fix pixel res
• Fix bug in optimistic reset wrapper (not critical)
• Added an option to force spawning of a diamond in the overworld (by default in Craftax-Classic ~35% of worlds have no diamond)