Add a custom social icon

Hi there:

Thanks for your great template😊.

i'm wonder to know is there anyway that i can add my own icon with svg/png file for using on params.social ?
feather icons are limited and i can't find a right icon for a small social media.
eg: https://qiita.com/

thanks

Start by tracing how params.social is rendered and how the theme currently selects Feather icons. Determine where a custom SVG or PNG could be configured for a social entry, then verify that a small social service such as Qiita displays correctly without breaking existing icons.

Written by the indexing model from the issue text.