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/scripts/install-prerequisites.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/sh
+
+# Install Linux package prerequisites needed for LVGL development
+# and testing. Some less-common development packages are not included
+# here, such as MicroPython and PC simulator packages.
+#
+# Note: This script is run by the CI workflows.
+sudo apt update
+sudo apt install gcc python3 libpng-dev ruby-full gcovr cmake