fix(Core/Movement): (#7008)

- Get zone/area IDs from vmap data in the liquid update
- Add new method Map::getFullVMapDataForPosition to get area info and liquid info in a single vmap lookup
- Adjust GetZoneId/GetAreaId on WorldObject to always return these cached fields.
- Clean up liquid state handling on Unit and Player
- Implemented getting area id from gameobject spawns.
- Removed old core related to getting movement flags dependent on environment.
- Movement flags are now processed more precisely and dynamically.

Original source: TrinityCore.

- Closes #5086
- Updates #2208.

src/common/Collision/Maps/MapTree.h

@@ -23,6 +23,7 @@ namespace VMAP
         const ModelInstance* hitInstance{nullptr};
         const GroupModel* hitModel{nullptr};
         float ground_Z;
+        int32 rootId = -1;
     };
 
     class StaticMapTree