2.0

What's Changed

2.0 by @Jeremi360 in #6:

• update to use new Utils funcs
• fix toggle mode in ButtonContainer - for real this time
• add get_var() func to Utils
• make utils funcs use Signal object instead of Object + signal_name combo
• move project to godot 4.5
• add Utils script
• rm radio_mode export var as this the same as having button_group in ButtonContainer

Full Changelog: 1.1...2.0