Moved memorymapping files into a separate function

game_payload/include/utils.h

@@ -1,9 +1,19 @@
 #pragma once
 
+#include <windows.h>
 #include <stdint.h>
 
 #define UTILS_COUNT(arr) (sizeof(arr) / sizeof(*arr))
 
+struct file_mapping {
+    HANDLE file;
+    HANDLE mapping;
+    unsigned char *data;
+};
+
+void utils_map_file(const wchar_t *path, struct file_mapping *map);
+void utils_unmap_file(struct file_mapping *map);
+
 int utils_path_exists(const wchar_t *filePath);
 uint32_t utils_file_crc32c(const wchar_t *filePath);