RK-A2

We need to mention "Happily served <num> answers" under the chat interface. Today, <num> starts from zero when the page is loaded. However, this needs to count all answers ever served.

-When page is loaded, show the empty screen as usual.
-do the following in the background
--threadAnswerCount = get it from local storage (First time, it will be zero)
--send an call_openai_api gcf call with empty message and threadAnswerCount.

When you get the call_openai_api response (above or any future call), update threadAnswerCount and localStorage with answerCount
--if threadAnswerCount is non-zero, show "Happily served <threadAnswerCount> answers"