Add basic UI system

- Create UI header with menu structures
- Implement screen clearing and title display
- Add message printing functionality
- Foundation for menu-driven interface

source/ui_basic.h

@@ -0,0 +1,23 @@
+#ifndef UI_H
+#define UI_H
+
+typedef void (*func_t)();
+
+typedef struct  {
+    char ItemStr[30];
+    func_t ItemFunc;
+} MenuItem;
+
+typedef struct { 
+    char HeaderStr[30];
+    u32 ItemCount;
+    u32 StartLine;
+    u32 SelectedIndex;
+    MenuItem *Menu_Items;
+} Menu;
+
+void initUI();
+void printMessage(const char* message, ...);
+bool handleButtonPress(u64 button);
+
+#endif