Add transport support, gameobject queries, and fix item use

- Add setInstancePosition() to M2Renderer and WMORenderer for moving
  transport instances at runtime
- Detect UPDATEFLAG_TRANSPORT on gameobjects and track transport GUIDs
- Parse player-on-transport state from movement blocks
- Wire transport move callback in Application to update render positions
- Implement CMSG_GAMEOBJECT_QUERY / SMSG_GAMEOBJECT_QUERY_RESPONSE so
  gameobjects display proper names instead of "Unknown"
- Add name/entry fields to GameObject entity class
- Fix CMSG_USE_ITEM packet: remove extra uint8 that shifted the item
  GUID by one byte, breaking hearthstone and all item usage
- Remove redundant CMSG_LOOT after CMSG_GAMEOBJECT_USE for chests
- Show PvP enabled/disabled state in toggle message
- Relax WMO ramp wall-collision step-up check to allow walking on
  gentle ramps where floor rise per step is under 0.1 units
- Add M2 fallback when WMO group files fail to load for gameobjects
- Handle re-creation of existing gameobject render instances by
  updating position instead of silently ignoring

include/game/entity.hpp

@@ -256,10 +256,18 @@ public:
     GameObject() { type = ObjectType::GAMEOBJECT; }
     explicit GameObject(uint64_t guid) : Entity(guid) { type = ObjectType::GAMEOBJECT; }
 
+    const std::string& getName() const { return name; }
+    void setName(const std::string& n) { name = n; }
+
+    uint32_t getEntry() const { return entry; }
+    void setEntry(uint32_t e) { entry = e; }
+
     uint32_t getDisplayId() const { return displayId; }
     void setDisplayId(uint32_t id) { displayId = id; }
 
 protected:
+    std::string name;
+    uint32_t entry = 0;
     uint32_t displayId = 0;
 };