[FIX] Folder restructure (#2018)

As requested

Poll
```
1. Yes
2. Yes
3. Maybe, but yes
```

---------

Co-authored-by: Celandriel <22352763+Celandriel@users.noreply.github.com>

src/Core/Ai/Generic/Actions/BuyAction.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license, you may redistribute it
+ * and/or modify it under version 3 of the License, or (at your option), any later version.
+ */
+
+#ifndef _PLAYERBOT_BUYACTION_H
+#define _PLAYERBOT_BUYACTION_H
+
+#include "InventoryAction.h"
+
+class FindItemVisitor;
+class ObjectGuid;
+class Item;
+class Player;
+class PlayerbotAI;
+
+struct ItemTemplate;
+struct VendorItemData;
+
+class BuyAction : public InventoryAction
+{
+public:
+    BuyAction(PlayerbotAI* botAI) : InventoryAction(botAI, "buy") {}
+
+    bool Execute(Event event) override;
+
+private:
+    bool BuyItem(VendorItemData const* tItems, ObjectGuid vendorguid, ItemTemplate const* proto);
+    bool TradeItem(FindItemVisitor* visitor, int8 slot);
+    bool TradeItem(Item const* item, int8 slot);
+};
+
+#endif