adding micropython examples (#2286)

* adding micropython examples

* adding micropython examples

examples/styles/lv_example_style_7.py

@@ -0,0 +1,15 @@
+#
+# Using the Arc style properties
+#
+style = lv.style_t()
+style.init()
+
+style.set_arc_color(lv.palette_main(lv.PALETTE.RED))
+style.set_arc_width(4)
+
+# Create an object with the new style
+obj = lv.arc(lv.scr_act())
+obj.add_style(style, 0)
+obj.center()
+
+