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

components/camera_layout_slot.tscn

@@ -0,0 +1,35 @@
+[gd_scene format=3]
+
+[ext_resource type="Script" path="res://scripts/camera_layout_frame.gd" id="1"]
+
+[node name="CameraSlot" type="VBoxContainer"]
+theme_override_constants/separation = 8
+
+[node name="Header" type="HBoxContainer" parent="."]
+layout_mode = 2
+
+[node name="Title" type="Label" parent="Header"]
+layout_mode = 2
+size_flags_horizontal = 3
+text = "CAMERA / PRIMARY"
+theme_override_font_sizes/font_size = 20
+
+[node name="State" type="Label" parent="Header"]
+layout_mode = 2
+text = "NO STREAM"
+
+[node name="Frame" type="AspectRatioContainer" parent="."]
+unique_name_in_owner = true
+layout_mode = 2
+ratio = 1.7777778
+script = ExtResource("1")
+
+[node name="Placeholder" type="PanelContainer" parent="Frame"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="Frame/Placeholder"]
+layout_mode = 2
+text = "16:9 CAMERA\nReserved video surface"
+horizontal_alignment = 1
+vertical_alignment = 1
+theme_override_font_sizes/font_size = 24