Changed
Context
Custom favicon was not in use, update to current best practices.
Questions
What is the current best practice?
site.webmanifest or manifest.webmanifest?
(site.webmanifest came from favicon.io download)
Discovery
Consider dark mode version.
Modules
Responsive Favicons
This may not be using best practices (multiple sizes instead of svg/minimal from favicon.io).
Could be useful for multi sites to swap the favicon in use vs hardcoding in the theme.
Metatag Favicon
Submodule of Metatag.
Can this help with multisite setups as well?
Issues
Allow theme developers to add the default favicon filename to the theme's .info.yml