PathPrefix
filesystem
See #1308 This adds a parameter called `PathPrefix` to `filesystem.Config` that is prepended to any filepath being read from `filesystem.Root`. Intended to be used with Go 1.16's `embed.FS` type. Signed-off-by: Tom <tom@tdpain.net>
add Next test case
Co-Authored-By: RW <7063188+ReneWerner87@users.noreply.github.com>