Any resources on interacting with Copilot for 365 using an Office Add-in? [closed]

I am developing a Office.js add-in for Word, and PowerPoint (I don’t think Excel has Draft with Copilot yet), that may need to open up Copilot and pre-fill the Draft with Copilot prompt (perhaps with the ability to attach any files). Is this possible, I can’t seem to find any resources on doing so.