Support the named pipe opened by `TERA.exe` for the DPS meter

[alexrp]

If there's anything interesting here, perhaps the launcher APIs should allow interacting with it.

[alexrp]

Looks to be a bidirectional pipe used by the official damage meter to talk to the client, e.g. for getting packets and querying the data center.

We can probably add some basic support for it in the Vezel.Novadrop.Client library.