build: move map & rng logic to their own libraries

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I1802469f3baff4576f61accfb5a197d86a6a6964

libs/map/utils.h

@@ -0,0 +1,10 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+// Clamp value between min and max
+int clamp(int value, int min, int max);
+
+// Check if coordinates are within map bounds
+int in_bounds(int x, int y, int width, int height);
+
+#endif  // UTILS_H