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

Fix Gray Grey GRAY typos

Change message config name

Fix non pch build

Fix switch ident, also earlier removed whitespace. Add missing include for non pch build

Fix possible crash: if (forplayer || GetOwnerGUID()) changed to if (forplayer)

Apply Nayd.diff - Code style fixes

Fix leftovers from nayd

Correct SQL transaction and change one SQL query to C++ instead

Make loot items distinct
Merge branch 'Rochet2/ahbot' into master

Close pull request #12917