fix sdl3 linking + comments

src/app/Window.hpp

@@ -15,8 +15,12 @@ public:
 
 private:
 
+    // launches window
     int init();
 
+    // this window class will eventually hold mouse, keyboard, audio, etc. interfaces, like an SDL3 hub
+    // app will be able to attach callbacks for mouse and keyboard events
+
     SDL_Window* sdlWindow_;
 
 };