added help windows to invert theme option

scenes/main/help_window.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=2 format=3 uid="uid://cp5uwxjskqgr7"]
+[gd_scene load_steps=3 format=3 uid="uid://cp5uwxjskqgr7"]
 
 [ext_resource type="Script" uid="uid://bkte84glywsny" path="res://scenes/main/scripts/help_window.gd" id="1_ro77y"]
+[ext_resource type="Script" uid="uid://c503vew41pw80" path="res://scenes/main/scripts/color_rect_theme_invert.gd" id="2_5iwbo"]
 
 [node name="HelpWindow" type="Window"]
 auto_translate_mode = 1
@@ -14,6 +15,7 @@ script = ExtResource("1_ro77y")
 offset_right = 604.0
 offset_bottom = 506.0
 color = Color(0.101961, 0.101961, 0.101961, 0.6)
+script = ExtResource("2_5iwbo")
 
 [node name="HelpTitle" type="Label" parent="."]
 offset_left = 12.0