Cleanup examples and fix VoicesManager types (#332)

Signed-off-by: rany <rany2@riseup.net>

examples/async_audio_gen_with_dynamic_voice_selection.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+"""Simple example to generate an audio file with randomized
+dynamic voice selection based on attributes such as Gender,
+Language, or Locale."""
+
+import asyncio
+import random
+
+import edge_tts
+from edge_tts import VoicesManager
+
+TEXT = "Hoy es un buen día."
+OUTPUT_FILE = "spanish.mp3"
+
+
+async def amain() -> None:
+    """Main function"""
+    voices = await VoicesManager.create()
+    voice = voices.find(Gender="Male", Language="es")
+    # Also supports Locales
+    # voice = voices.find(Gender="Female", Locale="es-AR")
+
+    communicate = edge_tts.Communicate(TEXT, random.choice(voice)["Name"])
+    await communicate.save(OUTPUT_FILE)
+
+
+if __name__ == "__main__":
+    asyncio.run(amain())