Allow custom voice list to be passed to VoiceManager

* Useful so that the application could cache the list.
* Bump to version 6.1.x

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = edge-tts
-version = 6.0.9
+version = 6.1.0
 author = rany
 author_email = [email protected]
 description = Microsoft Edge's TTS

src/edge_tts/__init__.py

@@ -14,4 +14,4 @@
     "exceptions",
     "list_voices",
 ]
-__version__ = "6.0.7"
+__version__ = "6.1"

src/edge_tts/list_voices.py

@@ -52,12 +52,14 @@ def __init__(self) -> None:
         self.called_create: bool = False
 
     @classmethod
-    async def create(cls: Any) -> "VoicesManager":
+    async def create(
+        cls: Any, custom_voices: Optional[List[Dict[str, Any]]] = None
+    ) -> Any:
         """
         Creates a VoicesManager object and populates it with all available voices.
         """
         self = VoicesManager()
-        self.voices = await list_voices()
+        self.voices = await list_voices() if custom_voices is None else custom_voices
         self.voices = [
             {**voice, **{"Language": voice["Locale"].split("-")[0]}}
             for voice in self.voices