Add player death handling, race-aware faction hostility, and all-race texture support

- Death screen with "Release Spirit" button sends CMSG_REPOP_REQUEST
- Detect player death/resurrection via health updates (VALUES and CREATE)
- Faction hostility map now built per-character race instead of hardcoded Human
- CharSections.dbc texture lookup enabled for all races (was Human-only)
- Fallback texture paths use race folder names instead of hardcoded Human
- Player name in unit frame is clickable for self-targeting

include/game/world_packets.hpp

@@ -1268,5 +1268,11 @@ public:
     static bool parse(network::Packet& packet, ListInventoryData& data);
 };
 
+/** CMSG_REPOP_REQUEST packet builder */
+class RepopRequestPacket {
+public:
+    static network::Packet build();
+};
+
 } // namespace game
 } // namespace wowee