Add support for installing the Steam Streaming Speakers driver (#1262)

Co-authored-by: ReenigneArcher <42013603+ReenigneArcher@users.noreply.github.com>

src/config.h

@@ -65,6 +65,7 @@ namespace config {
   struct audio_t {
     std::string sink;
     std::string virtual_sink;
+    bool install_steam_drivers;
   };
 
   struct stream_t {