Add gltf loader

Added MIT licensed external library for loading gltf
files

Signed-off-by: Piotr Krygier <piotrkrygier@everyonecancode@xyz>

utilities/file_utils.h

@@ -14,7 +14,7 @@
  * @param bytes_count Returned bytes count
  * @param buffer Returned filled buffer
  */
-rse_err_t file_read(const char* file_path, size_t* bytes_count, char* buffer);
+rse_err_t file_read_bytes(const char* file_path, size_t* bytes_count, char* buffer);
 
 rse_err_t file_write(const char* file_name, size_t bytes_count, char* buffer);
 
@@ -22,5 +22,7 @@ rse_err_t file_load_pixels(const char* file_name, unsigned char* buffer, size_t*
 
 rse_err_t file_append_full_path(char* file_path, size_t max_buffer_size);
 
+rse_err_t file_json_parser(const char* file_name);
+
 #endif /* FILE_UTILS_H */