Add Method for loading community Vad Models (#136)

* Add code

* add code

backend/fastrtc/__init__.py

@@ -3,7 +3,13 @@ from .credentials import (
     get_turn_credentials,
     get_twilio_turn_credentials,
 )
-from .reply_on_pause import AlgoOptions, ReplyOnPause, SileroVadOptions
+from .pause_detection import (
+    ModelOptions,
+    PauseDetectionModel,
+    SileroVadOptions,
+    get_silero_model,
+)
+from .reply_on_pause import AlgoOptions, ReplyOnPause
 from .reply_on_stopwords import ReplyOnStopWords
 from .speech_to_text import MoonshineSTT, get_stt_model
 from .stream import Stream, UIArgs
@@ -63,4 +69,8 @@ __all__ = [
     "KokoroTTSOptions",
     "wait_for_item",
     "UIArgs",
+    "ModelOptions",
+    "PauseDetectionModel",
+    "get_silero_model",
+    "SileroVadOptions",
 ]