Project restructuring (fixes macOS builds) (#198)

- Create `Include/` folder for all main projects
- Fix some issues here and there (found while moving things)
- All includes are now in `Tactility/` subfolder and must be included with that prefix. This fixes issues with clashing POSIX headers (e.g. `<semaphore.h>` versus Tactility's `Semaphore.h`)

Tactility/Source/service/gui/GuiDraw.cpp

@@ -1,9 +1,10 @@
-#include "Check.h"
-#include "Log.h"
-#include "service/gui/Gui_i.h"
-#include "lvgl/LvglSync.h"
-#include "lvgl/Statusbar.h"
-#include "lvgl/Style.h"
+#include "Tactility/service/gui/Gui_i.h"
+#include "Tactility/lvgl/LvglSync.h"
+#include "Tactility/lvgl/Statusbar.h"
+#include "Tactility/lvgl/Style.h"
+
+#include <Tactility/Check.h>
+#include <Tactility/Log.h>
 
 namespace tt::service::gui {