We do have a discord server where some of our most active users are hanging out - maybe you could get some kindred spirits in there who would also like to see this built.
I was going to recommend extension.dev (was a low-code chrome extension builder) that I hooked up with n8n. But it seems like the project closed 
Maybe you can dig up something similar. As long as that service can make an HTTP request, you can use it to run your flows.
Another option I’ve ID’d could be using Elgato Streamdeck (though not sure it’s browser support), as it does allow to make HTTP Requests and has actions like “Copy clipboard contents” so maybe something there.