Add portable RV homes and decor prototype

items/catalog/basic_cube.tres

@@ -0,0 +1,17 @@
+[gd_resource type="Resource" script_class="ItemData" load_steps=3 format=3]
+
+[ext_resource type="Script" path="res://items/item_data.gd" id="1_item"]
+[ext_resource type="Texture2D" path="res://ui/icons/pictograms/x_light.png" id="2_icon"]
+
+[resource]
+script = ExtResource("1_item")
+item_id = &"basic_cube"
+display_name = "basic cube"
+description = "a simple piece of decor for testing your RV layout."
+category = 6
+icon = ExtResource("2_icon")
+stackable = true
+max_stack = 32
+usable = false
+equippable = true
+hotbar_allowed = true