Core/NetworkIO: *Implemented basic auth packets

* Nulled out all of the not fixed opcodes

Signed-off-by: Sovak <sovak007@gmail.com>
What does BoostInProgress mean?
We should really start either documenting the packet structures (Now that we have the chance to re-do them all) or explaining this stuff better in the comments. I'd rather we keep a dedicated page to documenting them