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/scroll/lv_example_scroll_1.py

@@ -0,0 +1,38 @@
+#
+# Demonstrate how scrolling appears automatically
+#
+# Create an object with the new style
+panel = lv.obj(lv.scr_act())
+panel.set_size(200, 200)
+panel.center()
+
+child = lv.obj(panel)
+child.set_pos(0, 0)
+label = lv.label(child)
+label.set_text("Zero")
+label.center()
+
+child = lv.obj(panel)
+child.set_pos(-40, 100)
+label = lv.label(child)
+label.set_text("Left")
+label.center()
+
+child = lv.obj(panel)
+child.set_pos(90, -30)
+label = lv.label(child)
+label.set_text("Top")
+label.center()
+
+child = lv.obj(panel)
+child.set_pos(150, 80)
+label = lv.label(child)
+label.set_text("Right")
+label.center()
+
+child = lv.obj(panel)
+child.set_pos(60, 170)
+label = lv.label(child)
+label.set_text("Bottom")
+label.center()
+