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_8.py

@@ -0,0 +1,27 @@
+#
+# Using the text style properties
+#
+
+style = lv.style_t()
+style.init()
+
+style.set_radius(5)
+style.set_bg_opa(lv.OPA.COVER)
+style.set_bg_color(lv.palette_lighten(lv.PALETTE.GREY, 3))
+style.set_border_width(2)
+style.set_border_color(lv.palette_main(lv.PALETTE.BLUE))
+style.set_pad_all(10)
+
+style.set_text_color(lv.palette_main(lv.PALETTE.BLUE))
+style.set_text_letter_space(5)
+style.set_text_line_space(20)
+style.set_text_decor(lv.TEXT_DECOR.UNDERLINE)
+
+# Create an object with the new style
+obj = lv.label(lv.scr_act())
+obj.add_style(style, 0)
+obj.set_text("Text of\n"
+             "a label")
+
+obj.center()
+