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

components/layout_canvas.tscn

@@ -0,0 +1,52 @@
+[gd_scene format=3 uid="uid://dscdhba74otou"]
+
+[ext_resource type="Script" uid="uid://bqrapdh6yddl8" path="res://scripts/layout_canvas.gd" id="1"]
+[ext_resource type="Script" uid="uid://cwbk5g4yhdfd6" path="res://scripts/layout_edit_overlay.gd" id="2"]
+
+[node name="LayoutCanvas" type="Control" unique_id=325333537]
+clip_contents = true
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+script = ExtResource("1")
+legacy_config_path = null
+
+[node name="EditOverlay" type="Control" parent="." unique_id=162710218]
+visible = false
+z_index = 120
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 2
+script = ExtResource("2")
+
+[node name="Actions" type="HBoxContainer" parent="EditOverlay" unique_id=846269020]
+visible = false
+layout_mode = 0
+offset_right = 112.0
+offset_bottom = 36.0
+theme_override_constants/separation = 2
+
+[node name="Settings" type="Button" parent="EditOverlay/Actions" unique_id=1387368158]
+custom_minimum_size = Vector2(36, 36)
+layout_mode = 2
+tooltip_text = "Settings (not available yet)"
+disabled = true
+text = "⚙"
+
+[node name="Resize" type="Button" parent="EditOverlay/Actions" unique_id=1301115821]
+custom_minimum_size = Vector2(36, 36)
+layout_mode = 2
+tooltip_text = "Drag to resize"
+text = "↘"
+
+[node name="Delete" type="Button" parent="EditOverlay/Actions" unique_id=1936216385]
+custom_minimum_size = Vector2(36, 36)
+layout_mode = 2
+tooltip_text = "Remove panel from layout"
+text = "×"