contrib/gitdm: Add Facebook the domain map

A number of Facebook developers contribute to the project. Peter can
you confirm your want pjd.dev contributions counted here or as
an individual contributor?

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Iris Chen <irischenlj@fb.com>
Cc: Daniel Müller <muellerd@fb.com>
Reviewed-by: Peter Delevoryas <peter@pjd.dev>
Message-Id: <20221219121914.851488-9-alex.bennee@linaro.org>

contrib/gitdm/domain-map

@@ -12,6 +12,7 @@ citrix.com      Citrix
 crudebyte.com   Crudebyte
 chinatelecom.cn China Telecom
 eldorado.org.br Instituto de Pesquisas Eldorado
+fb.com          Facebook
 fujitsu.com     Fujitsu
 google.com      Google
 greensocs.com   GreenSocs

contrib/gitdm/group-map-facebook

+#
+# Some Facebook contributors also occasionally use personal email addresses.
+#
+
+peter@pjd.dev

gitdm.config

@@ -33,6 +33,7 @@ EmailMap contrib/gitdm/domain-map
 
 GroupMap contrib/gitdm/group-map-cadence Cadence Design Systems
 GroupMap contrib/gitdm/group-map-codeweavers CodeWeavers
+GroupMap contrib/gitdm/group-map-facebook Facebook
 GroupMap contrib/gitdm/group-map-ibm IBM
 GroupMap contrib/gitdm/group-map-janustech Janus Technologies
 GroupMap contrib/gitdm/group-map-netflix Netflix