Update requirements.txt

requirements.txt

@@ -1,5 +1,5 @@
-streamlit
-Pillow
-requests
-huggingface_hub
-openai
+streamlit  # st.write(), st.text_input(), st.columns()
+requests   # requests.get(), requests.post(), requests.Session()
+huggingface_hub  # InferenceClient(), HfApi().login(), whoami()
+openai     # openai.ChatCompletion.create(), openai.Completion.create(), openai.Model.list()
+Pillow     # Image.open(), Image.save(), Image.resize()