add fmease to mailmap

Author: fmease

.mailmap

@@ -324,6 +324,7 @@ Lennart Kudling <github@kudling.de>
 Léo Lanteri Thauvin <leseulartichaut@gmail.com>
 Léo Lanteri Thauvin <leseulartichaut@gmail.com> <38361244+LeSeulArtichaut@users.noreply.github.com>
 Léo Testard <leo.testard@gmail.com>
+León Orell Valerian Liehr <me@fmease.dev> <liehr.exchange@gmx.net>
 Leonardo Yvens <leoyvens@gmail.com>
 Liigo Zhuang <liigo@qq.com>
 Lily Ballard <lily@ballards.net> <kevin@sb.org>