Support vertical map layout

[jhelwig]

Currently, only the horizontal map layout is supported. There should be a customization option for switching to the vertical map orientation.

[jhelwig]

List of things that will need to be updated (not a complete list):

• The location data in /ui/src/dungeonLocations.js and /ui/src/poiLocations.js will need to be updated to differentiate between the horizontal & vertical layouts, and the vertical layout data will need to be added.
• /ui/src/components/map/Location.vue should probably be updated to take a location object, instead of just a few properties from it (similarly to how /ui/src/components/map/Dungeon.vue already does).
• Both /ui/src/components/map/Location.vue and /ui/src/components/map/Dungeon.vue will need to be made aware of the map orientation setting so they can pick the appropriate set of coordinates for locations.