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.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include <switch.h>
+#include "ui_basic.h"
+
+void initUI() {
+    printf("\x1b[2J"); // Clear screen
+    printf("\x1b[1;1H"); // Move cursor to top-left
+    printf("═══════════════════════════════════════\n");
+    printf("        BOTW Completer v0.3\n");
+    printf("═══════════════════════════════════════\n");
+    printf("\n");
+}
+
+void printMessage(const char* message, ...) {
+    va_list args;
+    va_start(args, message);
+    vprintf(message, args);
+    va_end(args);
+}
+
+bool handleButtonPress(u64 button) {
+    if (button & HidNpadButton_Plus) {
+        return true; // Exit requested
+    }
+    return false; // Continue running
+}