check audio directory, if not there creat one

avatar.py

@@ -113,6 +113,9 @@ class Avatar:
 
   def create_mel_from_audio(self,input_text):
     tts = gTTS(text=input_text, lang="en")
+    if not os.path.exists(self.output_audio_path):
+      print(f"{self.output_audio_path} does not exist, creating one")
+      os.makedirs(self.output_audio_path)
     tts.save(f"{self.output_audio_path}input_audio.mp3")
     sound = AudioSegment.from_mp3(f"{self.output_audio_path}input_audio.mp3")