audioToText method
Implementation
@override
Future<Map<String, String>> audioToText(
String filePath, String userId) async {
final formData = FormData.fromMap({
'file': await MultipartFile.fromFile(filePath),
'user': userId,
});
final response = await _dio.post('/audio-to-text', data: formData);
return {'text': response.data['text']};
}