Add .mailmap file

.mailmap

+Alexandre Delanoë <alexandre.delanoe@iscpif.fr> <alexandre.delanoe@iscpif.fr>
+Alexandre Delanoë <alexandre.delanoe@iscpif.fr> <devel+git@delanoe.org>
+Alfredo Di Napoli <alfredo@well-typed.com> <alfredo.dinapoli@gmail.com>
+Alfredo Di Napoli <alfredo@well-typed.com> <alfredo@well-typed.com>
+Alp Mestanogullari <alp@well-typed.com> <alp@well-typed.com>
+Christian Merten <christian@merten.dev> <christian@merten.dev>
+David Chavalarias <david.chavalarias@iscpif.fr> <david.chavalarias@iscpif.fr>
+Fabien Manière <fabien@cnrs.iscpif.fr> <fabien.maniere@cnrs.fr>
+Fabien Manière <fabien@cnrs.iscpif.fr> <fabien@cnrs.iscpif.fr>
+Fabien Manière <fabien@cnrs.iscpif.fr> <fmaniere.pro@gmail.com>
+Gargamelle <gargamelle@gargantext.org>
+Guillaume Chérel <guillaume.cherel@iscpif.fr> <guillaume.cherel@iscpif.fr>
+Justin Woo <moomoowoo@gmail.com> <moomoowoo@gmail.com>
+Karen Konou <konoukaren@gmail.com> <konoukaren@gmail.com>
+Maël Nicolas <mael.nicolas@imt.fr> <mael.nicolas@imt.fr>
+Nicolas Pouillard <nicolas.pouillard@gmail.com> <nicolas.pouillard@gmail.com>
+Nicolas Pouillard <nicolas.pouillard@gmail.com> <np.t0@nicolaspouillard.fr>
+Przemysław Kaminski <pk@intrepidus.pl> <pk@intrepidus.pl>
+Quentin Lobbé <quentin.lobbe@iscpif.fr> <quentin.lobbe@gmail.com>
+Quentin Lobbé <quentin.lobbe@iscpif.fr> <quentin.lobbe@iscpif.fr>
+Sudhir Kumar <s@atomicits.com> <s@atomicits.com>