Tactility modules refactored (#13)

* refactor modules

* moved esp_lvgl_port to libs/

* added missing file

* fix for sim build

* various sim/pc fixes

* lvgl improvements

* added missing cmake files

libs/lvgl/examples/styles/lv_example_style_9.py

@@ -0,0 +1,21 @@
+#
+# Using the line style properties
+#
+
+style = lv.style_t()
+style.init()
+
+style.set_line_color(lv.palette_main(lv.PALETTE.GREY))
+style.set_line_width(6)
+style.set_line_rounded(True)
+
+# Create an object with the new style
+obj = lv.line(lv.scr_act())
+obj.add_style(style, 0)
+p =  [ {"x":10, "y":30},
+       {"x":30, "y":50},
+       {"x":100, "y":0}]
+
+obj.set_points(p, 3)
+
+obj.center()