C++ conversion (#80)

Converted project to C++

Boards/WaveshareS3Touch/display_i.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "lvgl.h"
+#include <cstdint>
+
+bool ws3t_display_lock(uint32_t timeout_ms);
+void ws3t_display_unlock(void);
+
+lv_display_t* ws3t_display_create();
+void ws3t_display_destroy();