Add option for a blank screen to use during screenshares or presentations#703

I do a lot of screenshares and presentations using the browser. My Toby is full of things that I want to follow up on – a mix of personal and business. I don’t want the people I’m presenting to to see any of it when I open a new browser tab. I’d love there to be an option just to show a blank page (or similar) for this purpose. At the moment I typically use incognito windows to present, which is annoying because I have to sign into multiple accounts then. I guess I could just disable the Toby extension, but I’d rather not. Hope this is an easy addition!