[Added] [Map] Spiral of Vul

[benjcallaghan]

The new contested zone uses the same map as the two dungeons I just finished. This isn't a complete map (there's two or three large regions that are uncharted), but it's reasonable for the first half of the zone.

<ImageStyle Name="exp21_dun_blackhook_contested_0" displayname="Spiral of Vul (Sullen Sanctuary)" zonerect="-387, -947, 590, -285">
<ImageFrame Source="images/maps/map_exp21_dun_blackhook_02.dds" SourceRect="0,0,1506,1024" />
</ImageStyle>
<ImageStyle Name="exp21_dun_blackhook_contested_1" displayname="Spiral of Vul (Fort Vul)" zonerect="-660, -413, 13, 515">
<ImageFrame Source="images/maps/map_exp21_dun_blackhook_01.dds" SourceRect="0,0,1024,1411" />
</ImageStyle>