chrome extension: modifying gmail signature settings - proof of concept

Requirements, Chrome extension that: (1) For testing purposes, give the user an option to choose 1,2,3,4 or 5 from a dropdown when the extension icon is clicked. If the concept works, v2 will check an AWS database for a unique ID. (no need in this version). (2) Depending on what number is selected, populate the email signature in gmail settings. This will include HTML and images. (3) the next email opened should have the new email signature That's it. Looking for simple proof of concept. I will provide sample signatures to the winning freelancer. This project will have a version 2. You will need to have experience with simple AWS database working with a chrome extension if you want to work on it.