[Expeditions] Store description and leader name on dz (#1294)

* 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

zone/CMakeLists.txt

@@ -22,7 +22,7 @@ SET(zone_sources
 	corpse.cpp
 	data_bucket.cpp
 	doors.cpp
-	dynamiczone.cpp
+	dynamic_zone.cpp
 	effects.cpp
 	embparser.cpp
 	embparser_api.cpp
@@ -176,7 +176,7 @@ SET(zone_headers
 	corpse.h
 	data_bucket.h
 	doors.h
-	dynamiczone.h
+	dynamic_zone.h
 	embparser.h
 	embperl.h
 	embxs.h