Function calling (#175)

* added function calling code back

* removed old llm_context file

* added integration testing for openai

* added function calling example

* added function callbacks

* added function start callback

* fixup

* fixup

* added different return type support for function calling

* intake example working

* added frame loggers

* cleanup

* fixup

* Update openai.py

* removed function call frame types

* fixup

* re-added example

* renumbered wake phrase

* fixup for autopep8

* remove unused imports

src/pipecat/transports/base_output.py

@@ -158,7 +158,6 @@ class BaseOutputTransport(FrameProcessor):
         while self._running:
             try:
                 frame = self._sink_queue.get(timeout=1)
-
                 if not self._is_interrupted.is_set():
                     if isinstance(frame, AudioRawFrame):
                         if self._params.audio_out_enabled: