Add common expedition base class
Use repository for zone and world expedition caching
World now stores members and leader as Member objects instead of ids
This improves readability of the caching methods and lets world cache
expedition dzs and members like zone. World also now caches expeditions
as unique_ptr which will be necessary for future dz callback lambdas
that capture 'this' so addresses don't change on cache vector resizes.
This creates an abstract class in common so zone and world can share
most of the implementation. World now has access to the same dz data and
api as zone.
Rename CharacterChange to AddRemoveCharacter for clarity
Rename GetRemainingDuration to GetDurationRemaining for consistency
Move dynamic zone queries to custom repository methods
Use internal dz messages to process duration and location changes
Add world DynamicZone class (later this will inherit from a base)
Add FindDynamicZoneByID to get dz from zone and world system caches
* Rename dynamic zone source files
* Store description and leader name on dz
Removes the DynamicZoneInfo struct used for switch list window. This
data can be stored on DynamicZone and kept updated by its owning system
* Separate create compass packet method
Cleanup MarkSingleCompassLoc
