Add project mailmap

Author: joeyates

.mailmap

@@ -0,0 +1,13 @@
+AB <abolte@systemsaviour.com>
+AD <adrien@luxeylab.net>
+AK <akrebs@ualberta.ca>
+AN <andrey@nering.com.br>
+GS <bentolor@users.noreply.github.com>
+JM <joerg.mechnich@gmail.com>
+JY <info@bidsnc.com>
+JY <joe.g.yates@gmail.com>
+JY <joeyates@users.noreply.github.com>
+MW <mike@lepton.fr>
+MW <max@wardeh.org>
+NJ <nicholas.jakobsen@gmail.com>
+OJ <olle.jonsson@gmail.com>