add basic match3 logic

use proper logging everywhere
add gamepad and keyboard control on match3 gameplay

scenes/ui/MainMenu.gd

@@ -3,19 +3,19 @@ extends Control
 signal open_settings
 
 func _ready():
-	print("MainMenu ready")
+	DebugManager.log_info("MainMenu ready", "MainMenu")
 
 func _on_new_game_button_pressed():
 	AudioManager.play_ui_click()
-	print("New Game pressed")
+	DebugManager.log_info("New Game pressed", "MainMenu")
 	GameManager.start_new_game()
 
 func _on_settings_button_pressed():
 	AudioManager.play_ui_click()
-	print("Settings pressed")
+	DebugManager.log_info("Settings pressed", "MainMenu")
 	open_settings.emit()
 
 func _on_exit_button_pressed():
 	AudioManager.play_ui_click()
-	print("Exit pressed")
+	DebugManager.log_info("Exit pressed", "MainMenu")
 	get_tree().quit()