Added Ignition logo to built-in Icons

Small quality of life addition, that would make it easier to use the logo where possible.

Added the provided brand checkmarks and other logos to the icon library would make it easier for users to add callbacks to the platform inside co-branded apps.

In my specific example, I am replacing the appBar button with a custom one, and I would like to use the IA checkmark logo on a button as my toggle. I feel like this is a pretty easy adder, here is a features request.