Added a dynamic layout system where UI elements can be moved about on a tiled grid.

components/layout_overview.tscn

@@ -0,0 +1,81 @@
+[gd_scene format=3]
+
+[ext_resource type="Script" path="res://scripts/layout_overview.gd" id="1"]
+[ext_resource type="Script" path="res://scripts/layout_grid.gd" id="2"]
+
+[ext_resource type="Shader" path="res://shaders/layout_grid.gdshader" id="3"]
+
+[ext_resource type="PackedScene" path="res://components/layout_library.tscn" id="library"]
+
+[sub_resource type="ShaderMaterial" id="GridMaterial"]
+resource_local_to_scene = true
+shader = ExtResource("3")
+
+[node name="LayoutOverview" type="Control"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1")
+
+[node name="Dashboard" type="Control" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Grid" type="ColorRect" parent="Dashboard"]
+visible = false
+material = SubResource("GridMaterial")
+z_index = 100
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 0
+script = ExtResource("2")
+
+[node name="Toolbar" type="HBoxContainer" parent="."]
+visible = false
+z_index = 200
+layout_mode = 1
+anchor_right = 1.0
+offset_left = 24.0
+offset_top = 16.0
+offset_right = -24.0
+offset_bottom = 60.0
+mouse_filter = 2
+theme_override_constants/separation = 20
+
+[node name="Title" type="Label" parent="Toolbar"]
+layout_mode = 2
+size_flags_horizontal = 3
+mouse_filter = 2
+theme_override_font_sizes/font_size = 20
+text = "LAYOUT OVERVIEW"
+
+[node name="Hint" type="Label" parent="Toolbar"]
+layout_mode = 2
+mouse_filter = 2
+text = "Esc to return"
+
+[node name="Add" type="Button" parent="Toolbar"]
+layout_mode = 2
+text = "Add element"
+
+[node name="Reset" type="Button" parent="Toolbar"]
+layout_mode = 2
+text = "Reset layout"
+
+[node name="Return" type="Button" parent="Toolbar"]
+layout_mode = 2
+text = "Return to dashboard"
+
+[node name="Library" parent="." instance=ExtResource("library")]
+layout_mode = 1