Remove lighting system from rlgl standalone header

src/audio.h

@@ -109,6 +109,7 @@ extern "C" {            // Prevents name mangling of functions
 void InitAudioDevice(void);                                     // Initialize audio device and context
 void CloseAudioDevice(void);                                    // Close the audio device and context
 bool IsAudioDeviceReady(void);                                  // Check if audio device has been initialized successfully
+void SetMasterVolume(float volume);                             // Set master volume (listener)
 
 Wave LoadWave(const char *fileName);                            // Load wave data from file
 Wave LoadWaveEx(void *data, int sampleCount, int sampleRate, int sampleSize, int channels); // Load wave data from raw array data
@@ -138,6 +139,7 @@ void ResumeMusicStream(Music music);                            // Resume playin
 bool IsMusicPlaying(Music music);                               // Check if music is playing
 void SetMusicVolume(Music music, float volume);                 // Set volume for music (1.0 is max level)
 void SetMusicPitch(Music music, float pitch);                   // Set pitch for a music (1.0 is base level)
+void SetMusicLoopCount(Music music, float count);               // Set music loop count (loop repeats)
 float GetMusicTimeLength(Music music);                          // Get music time length (in seconds)
 float GetMusicTimePlayed(Music music);                          // Get current music time played (in seconds)