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/env_support/cmake/zephyr.cmake

@@ -0,0 +1,14 @@
+if(CONFIG_LVGL)
+
+  zephyr_include_directories(${ZEPHYR_BASE}/lib/gui/lvgl)
+
+  target_include_directories(lvgl INTERFACE ${LVGL_ROOT_DIR})
+
+  zephyr_compile_definitions(LV_CONF_KCONFIG_EXTERNAL_INCLUDE=<autoconf.h>)
+
+  zephyr_library()
+
+  file(GLOB_RECURSE SOURCES ${LVGL_ROOT_DIR}/src/*.c)
+  zephyr_library_sources(${SOURCES})
+
+endif(CONFIG_LVGL)