macOS Version, start countdown

Hello! A small update that introduces the following changes:

• Godot Version updated to 4.5
• Created a MacOS version (Please see the guide at https://docs.godotengine.org/en/stable/tutorials/export/running_on_macos.html For Instructions on how to run with active macOS Gatekeeper - "App is signed (including ad-hoc signatures) but not notarized")
• Added the option to start the Raffle after a separate countdown - Default 0 starts it immediately, as before.