Initialize module and dependencies

vendor/github.com/emersion/go-imap/v2/internal/acl.go

@@ -0,0 +1,13 @@
+package internal
+
+import (
+	"github.com/emersion/go-imap/v2"
+)
+
+func FormatRights(rm imap.RightModification, rs imap.RightSet) string {
+	s := ""
+	if rm != imap.RightModificationReplace {
+		s = string(rm)
+	}
+	return s + string(rs)
+}