hi you could try to look for the extension again in the extension gallery. maybe its now called something different or maybe there is an extension that does something that the Turbowarp browser extension did (that you could use alternatively). If you maybe have any projects that used the extension in then you could see if it maybe has a different name. Maybe you found the extension somewhere else (other than the Turbowarp Extension Library).
Do you maybe mean the extension "Navigator" which tells you a bit about the browser?
Or maybe "Browser Fullscreen" which allows you to set & get the Browsers fullscreen?