MNT: added @zerothi in mail-map

Signed-off-by: Nick Papior <nickpapior@gmail.com>

Author: zerothi

.mailmap

@@ -113,3 +113,7 @@ Anandhi S Jayakumar <anandhi.s.jayakumar@intel.com>
 Mohan Gandhi <mohgan@amazon.com>
 
 Harumi Kuno <harumi.kuno@hpe.com>
+
+Nick Papior <nickpapior@gmail.com>
+Nick Papior <nickpapior@gmail.com> <nicpa@dtu.dk>
+Nick Papior <nickpapior@gmail.com> <zerothi@users.noreply.github.com>