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/others/msg/index.rst

@@ -0,0 +1,20 @@
+
+Slider to label messaging
+"""""""""""""""""""""""""
+
+.. lv_example:: others/msg/lv_example_msg_1
+  :language: c
+
+Handling login and its states
+"""""""""""""""""""""""""""""
+
+.. lv_example:: others/msg/lv_example_msg_2
+  :language: c
+
+Setting the same value from many sources
+""""""""""""""""""""""""""""""""""""""""
+
+.. lv_example:: others/msg/lv_example_msg_3
+  :language: c
+
+