Able to save song and cover art to the appropriate paths. Next is saving it to the database

include/database/base_repository.h

@@ -10,6 +10,7 @@
 class base_repository
 {
 public:
+protected:
     MYSQL* setup_mysql_connection(database_connection);
 
     MYSQL_RES* perform_mysql_query(MYSQL*, const std::string&);