Add basic map pin functionality

- Define Point structure for 3D coordinates
- Add map pin type constants
- Implement placeholder functions for:
  * Player location loading
  * Map pin addition
  * Pin counting
- Foundation for Korok seed tracking

source/map_basic.h

@@ -0,0 +1,22 @@
+#ifndef MAP_H
+#define MAP_H
+
+#include <stdlib.h>
+#include <switch.h>
+
+#define MAP_PIN_STAR 0x1F
+#define MAP_PIN_LEAF 0x22
+#define MAP_PIN_EMPTY 0xFFFFFFFF
+
+typedef struct {
+    u32 hash;
+    float x;
+    float y;
+    float z;
+} Point;
+
+void loadPlayerLocation();
+void addMapPin(u32 icon, Point location);
+void countMapPins();
+
+#endif