feat(gamepad): detecció i notificacions hot-plug amb GamepadManager

source/core/input/input_state.cpp

@@ -28,4 +28,12 @@ namespace InputState {
         return blocked ? zeroKeyboard() : SDL_GetKeyboardState(nullptr);
     }
 
+    auto getGamepadButton(SDL_Gamepad* gp, SDL_GamepadButton b) -> bool {
+        return (blocked || gp == nullptr) ? false : SDL_GetGamepadButton(gp, b);
+    }
+
+    auto getGamepadAxis(SDL_Gamepad* gp, SDL_GamepadAxis ax) -> Sint16 {
+        return (blocked || gp == nullptr) ? static_cast<Sint16>(0) : SDL_GetGamepadAxis(gp, ax);
+    }
+
 }  // namespace InputState