allow passing configuration for mediaRecorder

[jasonpraful]

Changes

• Update useVoiceVisualizer() hook to accept and use mediaRecorderOptions when creating MediaRecorder instance.

Usage

const recorderControls = useVoiceVisualizer({
  mediaRecorderOptions: {
    mimeType: 'audio/mp4',
    bitsPerSecond: 128000,
  }
});

Notes

Hook now validates mimeType when passed and throws an error if the specified mimeType is not supported by the browser.

Closes: #38