Make namespaces more consistent (#92)

AppSim/Source/HelloWorld/hello_world.cpp

@@ -1,4 +1,4 @@
-#include "ui/Toolbar.h"
+#include "lvgl/Toolbar.h"
 
 static void app_show(tt::app::App app, lv_obj_t* parent) {
     lv_obj_t* toolbar = tt::lvgl::toolbar_create(parent, app);

AppSim/Source/lvgl_hal.cpp

@@ -1,5 +1,5 @@
 #include "lvgl.h"
-#include "ui/LvglKeypad.h"
+#include "lvgl/LvglKeypad.h"
 
 lv_display_t* lvgl_hal_init() {
     static lv_display_t* display = NULL;

AppSim/Source/lvgl_task.cpp

@@ -5,7 +5,7 @@
 #include "lvgl_hal.h"
 #include "TactilityCore.h"
 #include "Thread.h"
-#include "ui/LvglSync.h"
+#include "lvgl/LvglSync.h"
 
 #include "Mutex.h"