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/Include/Tactility/lvgl/Toolbar.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "lvgl.h"
+#include "../app/AppContext.h"
+
+namespace tt::lvgl {
+
+#define TOOLBAR_HEIGHT 40
+#define TOOLBAR_TITLE_FONT_HEIGHT 18
+#define TOOLBAR_ACTION_LIMIT 4
+
+lv_obj_t* toolbar_create(lv_obj_t* parent, const std::string& title);
+lv_obj_t* toolbar_create(lv_obj_t* parent, const app::AppContext& app);
+void toolbar_set_title(lv_obj_t* obj, const std::string& title);
+void toolbar_set_nav_action(lv_obj_t* obj, const char* icon, lv_event_cb_t callback, void* user_data);
+lv_obj_t* toolbar_add_button_action(lv_obj_t* obj, const char* icon, lv_event_cb_t callback, void* user_data);
+lv_obj_t* toolbar_add_switch_action(lv_obj_t* obj);
+lv_obj_t* toolbar_add_spinner_action(lv_obj_t* obj);
+
+} // namespace