add one more type in class draw

app.py

@@ -103,7 +103,7 @@ if __name__ == "__main__":
                                                 "照片，摄影(picture photography)", "油画(oil painting)", 
                                                 "铅笔素描(pencil sketch)", "CG", 
                                                 "水彩画(watercolor painting)", "水墨画(ink and wash)",
-                                                "插画(illustrations)", "3D"],
+                                                "插画(illustrations)", "3D", "图生图(img2img)"],
                                             label="生成类型(type)",
                                             show_label=True,
                                             value="通用(general)")