api: add scene tile shapes, underlay, and overlay ids

runelite-api/src/main/java/net/runelite/api/Scene.java

@@ -62,4 +62,22 @@ public interface Scene
 	void generateHouses();
 
 	void setRoofRemovalMode(int flags);
+
+	/**
+	 * Get the underlay ids for the scene. The value stored is id + 1, with 0 for no underlay.
+	 * @return
+	 */
+	byte[][][] getUnderlayIds();
+
+	/**
+	 * Get the overlay ids for the scene. The value stored is id + 1, with 0 for no overlay.
+	 * @return
+	 */
+	byte[][][] getOverlayIds();
+
+	/**
+	 * Get the shapes of the tiles for the scene.
+	 * @return
+	 */
+	byte[][][] getTileShapes();
 }