shared_ptr -> std::shared_ptr

This is one of the first commits in a plan to remove all `using namespace std;` lines in the entire codebase as it is considered anti-pattern today.

Minecraft.Client/TeleportCommand.h

@@ -6,7 +6,7 @@ class TeleportCommand : public Command
 {
 public:
 	virtual EGameCommand getId();
-	virtual void execute(shared_ptr<CommandSender> source, byteArray commandData);
+	virtual void execute(std::shared_ptr<CommandSender> source, byteArray commandData);
 
-	static shared_ptr<GameCommandPacket> preparePacket(PlayerUID subject, PlayerUID destination);
+	static std::shared_ptr<GameCommandPacket> preparePacket(PlayerUID subject, PlayerUID destination);
 };