export some calls to init/deinit code outside of the module

Change of way the packet objects are created/initialised
If the protocol gets changed, ever, we can decide at runtime
easily which protocol to use by instantiating the right protocol
obje

Change of way the packet objects are created/initialised
If the protocol gets changed, ever, we can decide at runtime
easily which protocol to use by instantiating the right protocol
object. But this is restricted to the structure of the packets, not
the flow.

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move MYSQLND_NET code to a separate file.
mysqlnd_wireprotocol is about the protocol not the transport
layer