feat(Core/Spawns): introduce SpawnData base struct and spawn group infrastructure (#25152)

Co-authored-by: r00ty-tc <r00ty-tc@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/server/game/Entities/Creature/CreatureData.h

@@ -22,6 +22,7 @@
 #include "DatabaseEnv.h"
 #include "ItemTemplate.h"
 #include "LootMgr.h"
+#include "SpawnData.h"
 #include "Unit.h"
 #include <list>
 
@@ -365,32 +366,23 @@ typedef std::unordered_map<uint8, EquipmentInfo> EquipmentInfoContainerInternal;
 typedef std::unordered_map<uint32, EquipmentInfoContainerInternal> EquipmentInfoContainer;
 
 // from `creature` table
-struct CreatureData
+struct CreatureData : public SpawnData
 {
-    CreatureData() = default;
+    CreatureData() : SpawnData(SPAWN_TYPE_CREATURE) {}
     uint32 id1{0};                                             // entry in creature_template
     uint32 id2{0};                                             // entry in creature_template
     uint32 id3{0};                                             // entry in creature_template
-    uint16 mapid{0};
-    uint32 phaseMask{0};
     uint32 displayid{0};
     int8 equipmentId{0};
-    float posX{0.0f};
-    float posY{0.0f};
-    float posZ{0.0f};
-    float orientation{0.0f};
     uint32 spawntimesecs{0};
     float wander_distance{0.0f};
     uint32 currentwaypoint{0};
     uint32 curhealth{0};
     uint32 curmana{0};
     uint8 movementType{0};
-    uint8 spawnMask{0};
     uint32 npcflag{0};
     uint32 unit_flags{0};                                      // enum UnitFlags mask values
     uint32 dynamicflags{0};
-    uint32 ScriptId;
-    bool dbData{true};
 };
 
 struct CreatureModelInfo