It's a very simple plugin. Just install, add your OPEN AI key, and call a action "chatGPT" with one variable which needs to be in the following method:
{"role": "user", "content": "How do I automate sending emails via Google Script?"}

or with reference:
{"role": "system", "content": "You are a helpful assistant."},
{"role": "user", "content": "Who won the world series in 2020?"},
{"role": "assistant", "content": "The Los Angeles Dodgers won the World Series in 2020."},
{"role": "user", "content": "Where was it played?"}