arch(driver): new driver architecture with new color format support

examples/widgets/slider/lv_example_slider_1.py

@@ -3,14 +3,14 @@
 #
 def slider_event_cb(e):
 
-    slider = e.get_target()
+    slider = e.get_target_obj()
     slider_label.set_text("{:d}%".format(slider.get_value()))
     slider_label.align_to(slider, lv.ALIGN.OUT_BOTTOM_MID, 0, 10)
 
 # Create a slider in the center of the display
 slider = lv.slider(lv.scr_act())
 slider.center()
-slider.add_event_cb(slider_event_cb, lv.EVENT.VALUE_CHANGED, None)
+slider.add_event(slider_event_cb, lv.EVENT.VALUE_CHANGED, None)
 
 # Create a label below the slider
 slider_label = lv.label(lv.scr_act())