Able to upload song. Left TODO on what's next

src/managers/song_manager.cpp

@@ -0,0 +1,22 @@
+#include "managers/song_manager.h"
+
+#include <fstream>
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+song_manager::song_manager(std::string& x_path)
+    : exe_path(x_path)
+{ }
+
+void song_manager::saveSong(Song& song)
+{
+    constexpr auto tmp_song = "/tmp/song.mp3";
+    if (fs::exists(fs::path(tmp_song))) {
+        std::cout << "deleting old song " << std::endl;
+        fs::remove(fs::path(tmp_song));
+    }
+    std::fstream s(tmp_song, std::fstream::binary | std::fstream::out);
+    s.write((char*)&song.data[0], song.data.size());
+    s.close();
+}