Doggo Game Update #1

General patch notes & new things:

• Fixed a bug with dogs in main menu being drawn in front of UI
• Added buttons to toggle audio (in game and in main menu)
• Added some background music during the game
• Added current version display
• Refactored some old scripts
• Added new button icons
• Added language selection window in main menu
• Added animation to score text
• Added sounds for UI and merging dogs
• Added Linux build