match-3 grid generation

make game scene modular
global debug mode

scenes/main/PressAnyKeyScreen.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=15 format=3 uid="uid://gbe1jarrwqsi"]
+[gd_scene load_steps=16 format=3 uid="uid://gbe1jarrwqsi"]
 
 [ext_resource type="Script" uid="uid://cxw2fjj5onja3" path="res://scenes/main/PressAnyKeyScreen.gd" id="1_0a4p2"]
 [ext_resource type="Texture2D" uid="uid://bcr4bokw87m5n" path="res://assets/sprites/characters/skeleton/Skeleton Idle.png" id="2_rjjcb"]
+[ext_resource type="PackedScene" path="res://scenes/ui/DebugToggle.tscn" id="3_debug"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_l6pue"]
 atlas = ExtResource("2_rjjcb")
@@ -132,3 +133,6 @@ horizontal_alignment = 1
 [node name="PressKeyLabel" type="Label" parent="PressKeyContainer"]
 layout_mode = 2
 text = "`press_ok_continue`"
+
+[node name="DebugToggle" parent="." instance=ExtResource("3_debug")]
+layout_mode = 1