add favicon.ico

[ar-to]

Process or Steps to Reproduce

[ordered list the process to finding and recreating the issue, example below]

1. load website
2. open console and see error

Expected result

nice icon on browser and no error

Current result

error:

GET https://ar-to.github.io/favicon.ico 404

Possible Fix

• The deployment to github pages is done from the public directory but not sure if github pages still check for the favicon inside the root or within the public so this needs to be checked.