gd,refacto: added state chart addon and namespace cleanup

godot_state_charts_examples/cooldown/skill_button/skill_button.tscn

@@ -0,0 +1,34 @@
+[gd_scene load_steps=3 format=3 uid="uid://ch1pukkyc07qo"]
+
+[ext_resource type="Script" path="res://godot_state_charts_examples/cooldown/skill_button/skill_button.gd" id="1_r0ivs"]
+[ext_resource type="Texture2D" uid="uid://tgsnqiq40n41" path="res://godot_state_charts_examples/cooldown/icons/cooldown_overlay.png" id="3_pgrfi"]
+
+[node name="SkillButton" type="MarginContainer"]
+offset_right = 32.0
+offset_bottom = 32.0
+script = ExtResource("1_r0ivs")
+
+[node name="Button" type="Button" parent="."]
+unique_name_in_owner = true
+layout_mode = 2
+
+[node name="TextureProgressBar" type="TextureProgressBar" parent="."]
+unique_name_in_owner = true
+layout_mode = 2
+mouse_filter = 2
+step = 0.0
+fill_mode = 4
+texture_progress = ExtResource("3_pgrfi")
+tint_progress = Color(0, 0, 0, 1)
+
+[node name="Label" type="Label" parent="."]
+unique_name_in_owner = true
+layout_mode = 2
+theme_override_colors/font_outline_color = Color(0, 0, 0, 1)
+theme_override_constants/outline_size = 8
+theme_override_font_sizes/font_size = 48
+text = "10"
+horizontal_alignment = 1
+vertical_alignment = 1
+
+[connection signal="pressed" from="Button" to="." method="_on_button_pressed"]