inworld: added (empty) requirements for Inworld to be explicit reg dependencies

docs/api/requirements.txt

@@ -23,6 +23,7 @@ pipecat-ai[gladia]
 pipecat-ai[google]
 pipecat-ai[grok]
 pipecat-ai[groq]
+pipecat-ai[inworld]
 # pipecat-ai[krisp] # Mocked
 pipecat-ai[koala]
 # pipecat-ai[langchain] # Mocked

pyproject.toml

@@ -59,6 +59,7 @@ google = [ "google-cloud-speech~=2.32.0", "google-cloud-texttospeech~=2.26.0", "
 grok = []
 groq = [ "groq~=0.23.0" ]
 gstreamer = [ "pygobject~=3.50.0" ]
+inworld = []
 krisp = [ "pipecat-ai-krisp~=0.4.0" ]
 koala = [ "pvkoala~=2.0.3" ]
 langchain = [ "langchain~=0.3.20", "langchain-community~=0.3.20", "langchain-openai~=0.3.9" ]