Print out a list of all unused msgids
Handle Go files that make calls to translation.
Handle `models/unit/unit.go`, which stores msgids in `$Unit.NameKey`
Handle .locale.Tr in templates
Handle simple dynamically constructed `Tr("msgid-prefix." + SomeFunctionCall())`.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8736
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Ellen Εμιλία Άννα Zscheile <fogti+devel@ytrizja.de>
Co-committed-by: Ellen Εμιλία Άννα Zscheile <fogti+devel@ytrizja.de>
