feat(audio): so del sarcòfag amb pitch aleatori per obertura

source/core/audio/jail_audio.cpp

@@ -430,6 +430,12 @@ namespace Ja {
         return channel;
     }
 
+    void Engine::setChannelSpeed(const int channel, const float ratio) {
+        if (channel < 0 || channel >= MAX_SIMULTANEOUS_CHANNELS) { return; }
+        if (channels_[channel].stream == nullptr) { return; }
+        SDL_SetAudioStreamFrequencyRatio(channels_[channel].stream, ratio);
+    }
+
     void Engine::pauseChannel(const int channel) {
         forEachTargetChannel(channel, [](Channel& ch) {
             if (ch.state == ChannelState::PLAYING) {