Revert "Deplacement des Socket dans le CoreBundle (+ ajout d'une exception commune a toutes les exceptions socket)."

This reverts commit 7e55fae2a110e27e1025c0102c8612ed8238afeb.

Conflicts:
	src/DP/Core/CoreBundle/Socket/Exception/SocketException.php
	src/DP/GameServer/GameServerBundle/Service/PacketFactory.php
	src/DP/GameServer/SteamServerBundle/SteamQuery/SteamQuery.php
Correction services "socket factory" et "query injector".