feat: updated project version to 0.6.0

Author: simone-lungarella

project.godot

@@ -11,7 +11,7 @@ config_version=5
 [application]
 
 config/name="Sum Zero"
-config/version="0.5.1"
+config/version="0.6.0"
 run/main_scene="res://packed_scene/scene_2d/LevelManager.tscn"
 config/features=PackedStringArray("4.3", "Forward Plus")
 boot_splash/bg_color=Color(0.25098, 0.184314, 0.105882, 1)