switch to INI for settings (easier), make settings a singleton thingy, slightly simplify core pause/stop/reset. Drop support for remappable inputs for now

src/frontend/RenderWidget.hpp

@@ -25,10 +25,7 @@ private:
 class SDLWSIPlatform final : public Vulkan::WSIPlatform {
 public:
   explicit SDLWSIPlatform(const std::shared_ptr<n64::Core> &core, SDL_Window* window) : window(window), core(core) {}
-  ~SDLWSIPlatform() {
-    if(gamepadConnected)
-      SDL_CloseGamepad(gamepad);
-  }
+  ~SDLWSIPlatform() = default;
 
   std::vector<const char *> get_instance_extensions() override {
     auto vec = std::vector<const char *>();
@@ -71,7 +68,6 @@ public:
   VkSurfaceKHR surface;
 private:
   std::shared_ptr<n64::Core> core;
-  SDL_Gamepad *gamepad{};
   bool gamepadConnected = false;
 };