first pass at turn based conversation

vocode/streaming/input_device/base_input_device.py

@@ -0,0 +1,16 @@
+from vocode.streaming.models.audio_encoding import AudioEncoding
+import queue
+from typing import Optional
+
+
+class BaseInputDevice:
+    def __init__(
+        self, sampling_rate: int, audio_encoding: AudioEncoding, chunk_size: int
+    ):
+        self.sampling_rate = sampling_rate
+        self.audio_encoding = audio_encoding
+        self.chunk_size = chunk_size
+        self.queue = queue.Queue()
+
+    def get_audio(self) -> Optional[bytes]:
+        raise NotImplementedError