Create category-flight-simulator (#4148)

data/vatsim

@@ -0,0 +1,25 @@
+vat-apac.com
+vatca.org
+vatcan.ca
+vatcar.net
+vateud.net
+vathk.com
+vatil.org.il
+vatjpn.org
+vatkor.net
+vatmex.com.mx
+vatnz.net
+vatpac.org
+vatprc.net
+vatroc.net
+vats.im
+vatsea.org
+vatsim.com.br
+vatsim.dev
+vatsim.me
+vatsim.net
+vatsim.uk
+vatssa.com
+vatsur.org
+vatusa.net
+vatwa.net