Add gfx command to developer tools

Setting the spotAnimFrame to 0 is required to play the graphic from the start

runelite-client/src/main/java/net/runelite/client/plugins/devtools/DevToolsPlugin.java

@@ -187,6 +187,14 @@ public class DevToolsPlugin extends Plugin
 				localPlayer.setActionFrame(0);
 				break;
 			}
+			case "gfx":
+			{
+				int id = Integer.parseInt(args[0]);
+				Player localPlayer = client.getLocalPlayer();
+				localPlayer.setGraphic(id);
+				localPlayer.setSpotAnimFrame(0);
+				break;
+			}
 		}
 	}