Add trubrics component to streamlit llm-examples

[sfc-gh-cfrasca]

@sfc-gh-jcarroll any issues with this?

[jeffkayne]

@sfc-gh-jcarroll @sfc-gh-cfrasca

I've fixed all the comments above. Thanks for those!

I've also added in some optional st.secrets that will allow you to save feedback to your Trubrics account if you wish: https://trubrics.streamlit.app/

To do so just add the following secrets: TRUBRICS_EMAIL= TRUBRICS_PASSWORD= TRUBRICS_SAVE=true