fix: address PR review comments

- Rename receive_file_receive -> file_receive (comment 62)
- Guard metadata receive with config->use_metadata in server.c (comment 63)
- Add NULL check after malloc in file_load_data (comment 66)
- Make chunk_serialize/chunk_deserialize metadata conditional on use_metadata param,
  thread through chunk_compress/chunk_decompress (comment 65)
- Add missing stdbool.h include to chunk.h

src/shared/chunk.h

@@ -3,6 +3,7 @@
 
 #include "data.h"
 #include "file.h"
+#include <stdbool.h>
 #include <sys/stat.h>
 
 #define DESIRED_CHUNK_SIZE 10 * 1024 * 1024
@@ -16,10 +17,10 @@ Chunk *chunk_create(File **items, int element_count);
 void chunk_destroy(void *chunk);
 void chunk_print(void *chunk);
 Data *chunk_format(Chunk *chunk);
-Data *chunk_serialize(Chunk *chunk);
-Chunk *chunk_deserialize(Data *data);
-Data *chunk_compress(Chunk *chunk, int compression_level);
-Chunk *chunk_decompress(Data *compressed_data);
+Data *chunk_serialize(Chunk *chunk, bool use_metadata);
+Chunk *chunk_deserialize(Data *data, bool use_metadata);
+Data *chunk_compress(Chunk *chunk, int compression_level, bool use_metadata);
+Chunk *chunk_decompress(Data *compressed_data, bool use_metadata);
 
 Data *chunk_data_create(void *data, unsigned long long data_size);
 void chunk_data_delete(void *chunk);