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

tactility-esp/src/graphics_i.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "devices.h"
+#include "graphics.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+Lvgl tt_graphics_init(Hardware _Nonnull* hardware);
+
+#ifdef __cplusplus
+}
+#endif