Core/AHBot: Implemented AHBot based on MaNGOS code
Warning: CMake must be rerun

Apply if you have crashes

Rewrite Seller prices, add random properties and implement some suggestions on price calculations

Core/AHBot: Update to latest suggestions

Fix SQLs after merge, split the AH bot to spearate headers and cpps, fix the config default values

Remove case 8 from GetBuyModifier. It was not correct