Add support for Floorp browser (Firefox Fork)

[rawpie2]

Hello it would be nice to get support for the browser assistant for the Floorp browser.
Floorp

This is a Firefox fork gaining popularity with a focus on privacy and security, which the extension perfectly installs on but isn't supported so it never enables properly.
Thanks

[alexx7311]

@rawpie2 Hello! Thanks, we'll do it!